component
AIP74HC244TA20.TR
Public Made by Adomby adom
Wuxi I-core Elec Buffer/Driver/Transceiver, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AIP74HC244TA20.TR
Wuxi I-core Elec · Buffer/Driver/Transceiver · TSSOP-20
AIP74HC244TA20.TR from Wuxi I-core Elec, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Active-low output enable for the 1Yn three-state outputs; a high level on this pin forces those outputs into the high-impedance state. |
| 2 | 1A0 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 3 | 2Y0 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 4 | 1A1 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 5 | 2Y1 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 6 | 1A2 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 7 | 2Y2 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 8 | 1A3 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 9 | 2Y3 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 10 | GND | power_in | Ground reference, 0 V. |
| 11 | 2A3 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 12 | 1Y3 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 13 | 2A2 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 14 | 1Y2 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 15 | 2A1 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 16 | 1Y1 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 17 | 2A0 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 18 | 1Y0 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 19 | 2OE | input | Active-low output enable for the 2Yn three-state outputs; a high level on this pin forces those outputs into the high-impedance state. |
| 20 | VCC | power_in | Supply voltage; the AiP74HC244 is rated 2.0 V to 6.0 V and the AiP74HCT244 4.5 V to 5.5 V, with an absolute maximum of 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| Package | TSSOP-20 |
| Category | Logic ICs |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 | 7 | V | Tamb=25C | 6 | |
| Input clamping current | IIK | -20 | 20 | mA | VI<-0.5V or VI>VCC+0.5V | 6 | |
| Output clamping current | IOK | -20 | 20 | mA | VO<-0.5V or VO>VCC+0.5V | 6 | |
| Output current | IO | -35 | 35 | mA | -0.5V<VO<VCC+0.5V | 6 | |
| Supply current | ICC | 70 | mA | 6 | |||
| Ground current | IGND | -70 | mA | 6 | |||
| Storage temperature | Tstg | -65 | 150 | C | 6 | ||
| Total power dissipation | Ptot | 500 | mW | 6 | |||
| Supply voltage | VCC | 2 | 5 | 6 | V | AiP74HC244 | 6 |
| Input voltage | VI | 0 | V | max = VCC | 6 | ||
| Output voltage | VO | 0 | V | max = VCC | 6 | ||
| Input rise and fall rate | Δt/ΔV | 625 | ns/V | VCC=2.0V | 6 | ||
| Input rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC=4.5V | 6 | |
| Input rise and fall rate | Δt/ΔV | 83 | ns/V | VCC=6.0V | 6 | ||
| Operating ambient temperature | Tamb | -40 | 105 | C | 6 | ||
| High-level input voltage | VIH | 1.5 | 1.2 | V | Tamb=25C; VCC=2.0V | 7 | |
| High-level input voltage | VIH | 3.15 | 2.4 | V | Tamb=25C; VCC=4.5V | 7 | |
| High-level input voltage | VIH | 4.2 | 3.2 | V | Tamb=25C; VCC=6.0V | 7 | |
| Low-level input voltage | VIL | 0.8 | 0.5 | V | Tamb=25C; VCC=2.0V | 7 | |
| Low-level input voltage | VIL | 2.1 | 1.35 | V | Tamb=25C; VCC=4.5V | 7 | |
| Low-level input voltage | VIL | 2.8 | 1.8 | V | Tamb=25C; VCC=6.0V | 7 | |
| High-level output voltage | VOH | 1.9 | 2 | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=2.0V | 7 | |
| High-level output voltage | VOH | 4.4 | 4.5 | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=4.5V | 7 | |
| High-level output voltage | VOH | 5.9 | 6 | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=6.0V | 7 | |
| High-level output voltage | VOH | 3.98 | 4.32 | V | Tamb=25C; VI=VIH or VIL; IO=-6.0mA; VCC=4.5V | 7 | |
| High-level output voltage | VOH | 5.48 | 5.81 | V | Tamb=25C; VI=VIH or VIL; IO=-7.8mA; VCC=6.0V | 7 | |
| Low-level output voltage | VOL | 0 | 0.1 | V | Tamb=25C; VI=VIH or VIL; IO=20uA; VCC=2.0V | 7 | |
| Low-level output voltage | VOL | 0.15 | 0.26 | V | Tamb=25C; VI=VIH or VIL; IO=6.0mA; VCC=4.5V | 7 | |
| Low-level output voltage | VOL | 0.16 | 0.26 | V | Tamb=25C; VI=VIH or VIL; IO=7.8mA; VCC=6.0V | 7 | |
| Input leakage current | II | -0.1 | 0.1 | uA | Tamb=25C; VI=VCC or GND; VCC=6.0V | 7 | |
| Off-state output current | IOZ | -0.5 | 0.5 | uA | Tamb=25C; VI=VIH or VIL; VCC=6.0V; VO=VCC or GND | 7 | |
| Quiescent supply current | ICC | 8 | uA | Tamb=25C; VI=VCC or GND; IO=0A; VCC=6.0V | 7 | ||
| High-level input voltage | VIH | 1.5 | V | Tamb=-40 to +105C; VCC=2.0V | 9 | ||
| High-level input voltage | VIH | 3.15 | V | Tamb=-40 to +105C; VCC=4.5V | 9 | ||
| High-level input voltage | VIH | 4.2 | V | Tamb=-40 to +105C; VCC=6.0V | 9 | ||
| Low-level input voltage | VIL | 0.5 | V | Tamb=-40 to +105C; VCC=2.0V | 9 | ||
| Low-level input voltage | VIL | 1.35 | V | Tamb=-40 to +105C; VCC=4.5V | 9 | ||
| Low-level input voltage | VIL | 1.8 | V | Tamb=-40 to +105C; VCC=6.0V | 9 | ||
| High-level output voltage | VOH | 1.9 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=2.0V | 9 | ||
| High-level output voltage | VOH | 4.4 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=4.5V | 9 | ||
| High-level output voltage | VOH | 5.9 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=6.0V | 9 | ||
| High-level output voltage | VOH | 3.7 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-6.0mA; VCC=4.5V | 9 | ||
| High-level output voltage | VOH | 5.2 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-7.8mA; VCC=6.0V | 9 | ||
| Low-level output voltage | VOL | 0.1 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=20uA; VCC=2.0V | 9 | ||
| Low-level output voltage | VOL | 0.4 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=6.0mA; VCC=4.5V | 9 | ||
| Input leakage current | II | -1 | 1 | uA | Tamb=-40 to +105C; VI=VCC or GND; VCC=6.0V | 9 | |
| Off-state output current | IOZ | -10 | 10 | uA | Tamb=-40 to +105C; VI=VIH or VIL; VCC=6.0V; VO=VCC or GND | 9 | |
| Quiescent supply current | ICC | 160 | uA | Tamb=-40 to +105C; VI=VCC or GND; IO=0A; VCC=6.0V | 9 | ||
| Propagation delay nAn to nYn | tpd | 165 | ns | Tamb=-40 to +105C; VCC=2.0V | 12 | ||
| Propagation delay nAn to nYn | tpd | 33 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 | ||
| Propagation delay nAn to nYn | tpd | 28 | ns | Tamb=-40 to +105C; VCC=6.0V | 12 | ||
| Enable time nOE to nYn | ten | 45 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 | ||
| Disable time nOE to nYn | tdis | 45 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 | ||
| Transition time | tt | 18 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 |
CAD (KiCad official)
- Symbol:
AIP74HC244TA20.TR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
aip74hc244ta20-tr-etched.step/aip74hc244ta20-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aip74hc244ta20-tr.step/aip74hc244ta20-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi I-core Elec datasheet (18 pp, sha256
8a752d8af77d4618, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# AIP74HC244TA20.TR
**Wuxi I-core Elec** · Buffer/Driver/Transceiver · TSSOP-20
AIP74HC244TA20.TR from Wuxi I-core Elec, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Active-low output enable for the 1Yn three-state outputs; a high level on this pin forces those outputs into the high-impedance state. |
| 2 | 1A0 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 3 | 2Y0 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 4 | 1A1 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 5 | 2Y1 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 6 | 1A2 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 7 | 2Y2 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 8 | 1A3 | input | Data input of the first 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 9 | 2Y3 | tri_state | Non-inverting three-state bus output of the second 4-bit buffer, high-impedance when its output enable is high. |
| 10 | GND | power_in | Ground reference, 0 V. |
| 11 | 2A3 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 12 | 1Y3 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 13 | 2A2 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 14 | 1Y2 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 15 | 2A1 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 16 | 1Y1 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 17 | 2A0 | input | Data input of the second 4-bit buffer; the input has a clamp diode, so it can be driven above VCC through a current-limiting resistor. |
| 18 | 1Y0 | tri_state | Non-inverting three-state bus output of the first 4-bit buffer, high-impedance when its output enable is high. |
| 19 | 2OE | input | Active-low output enable for the 2Yn three-state outputs; a high level on this pin forces those outputs into the high-impedance state. |
| 20 | VCC | power_in | Supply voltage; the AiP74HC244 is rated 2.0 V to 6.0 V and the AiP74HCT244 4.5 V to 5.5 V, with an absolute maximum of 7.0 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| Package | TSSOP-20 |
| Category | Logic ICs |
| Pins | 20 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 | | 7 | V | Tamb=25C | 6 |
| Input clamping current | IIK | -20 | | 20 | mA | VI<-0.5V or VI>VCC+0.5V | 6 |
| Output clamping current | IOK | -20 | | 20 | mA | VO<-0.5V or VO>VCC+0.5V | 6 |
| Output current | IO | -35 | | 35 | mA | -0.5V<VO<VCC+0.5V | 6 |
| Supply current | ICC | | | 70 | mA | | 6 |
| Ground current | IGND | -70 | | | mA | | 6 |
| Storage temperature | Tstg | -65 | | 150 | C | | 6 |
| Total power dissipation | Ptot | | | 500 | mW | | 6 |
| Supply voltage | VCC | 2 | 5 | 6 | V | AiP74HC244 | 6 |
| Input voltage | VI | 0 | | | V | max = VCC | 6 |
| Output voltage | VO | 0 | | | V | max = VCC | 6 |
| Input rise and fall rate | Δt/ΔV | | | 625 | ns/V | VCC=2.0V | 6 |
| Input rise and fall rate | Δt/ΔV | | 1.67 | 139 | ns/V | VCC=4.5V | 6 |
| Input rise and fall rate | Δt/ΔV | | | 83 | ns/V | VCC=6.0V | 6 |
| Operating ambient temperature | Tamb | -40 | | 105 | C | | 6 |
| High-level input voltage | VIH | 1.5 | 1.2 | | V | Tamb=25C; VCC=2.0V | 7 |
| High-level input voltage | VIH | 3.15 | 2.4 | | V | Tamb=25C; VCC=4.5V | 7 |
| High-level input voltage | VIH | 4.2 | 3.2 | | V | Tamb=25C; VCC=6.0V | 7 |
| Low-level input voltage | VIL | | 0.8 | 0.5 | V | Tamb=25C; VCC=2.0V | 7 |
| Low-level input voltage | VIL | | 2.1 | 1.35 | V | Tamb=25C; VCC=4.5V | 7 |
| Low-level input voltage | VIL | | 2.8 | 1.8 | V | Tamb=25C; VCC=6.0V | 7 |
| High-level output voltage | VOH | 1.9 | 2 | | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=2.0V | 7 |
| High-level output voltage | VOH | 4.4 | 4.5 | | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=4.5V | 7 |
| High-level output voltage | VOH | 5.9 | 6 | | V | Tamb=25C; VI=VIH or VIL; IO=-20uA; VCC=6.0V | 7 |
| High-level output voltage | VOH | 3.98 | 4.32 | | V | Tamb=25C; VI=VIH or VIL; IO=-6.0mA; VCC=4.5V | 7 |
| High-level output voltage | VOH | 5.48 | 5.81 | | V | Tamb=25C; VI=VIH or VIL; IO=-7.8mA; VCC=6.0V | 7 |
| Low-level output voltage | VOL | | 0 | 0.1 | V | Tamb=25C; VI=VIH or VIL; IO=20uA; VCC=2.0V | 7 |
| Low-level output voltage | VOL | | 0.15 | 0.26 | V | Tamb=25C; VI=VIH or VIL; IO=6.0mA; VCC=4.5V | 7 |
| Low-level output voltage | VOL | | 0.16 | 0.26 | V | Tamb=25C; VI=VIH or VIL; IO=7.8mA; VCC=6.0V | 7 |
| Input leakage current | II | -0.1 | | 0.1 | uA | Tamb=25C; VI=VCC or GND; VCC=6.0V | 7 |
| Off-state output current | IOZ | -0.5 | | 0.5 | uA | Tamb=25C; VI=VIH or VIL; VCC=6.0V; VO=VCC or GND | 7 |
| Quiescent supply current | ICC | | | 8 | uA | Tamb=25C; VI=VCC or GND; IO=0A; VCC=6.0V | 7 |
| High-level input voltage | VIH | 1.5 | | | V | Tamb=-40 to +105C; VCC=2.0V | 9 |
| High-level input voltage | VIH | 3.15 | | | V | Tamb=-40 to +105C; VCC=4.5V | 9 |
| High-level input voltage | VIH | 4.2 | | | V | Tamb=-40 to +105C; VCC=6.0V | 9 |
| Low-level input voltage | VIL | | | 0.5 | V | Tamb=-40 to +105C; VCC=2.0V | 9 |
| Low-level input voltage | VIL | | | 1.35 | V | Tamb=-40 to +105C; VCC=4.5V | 9 |
| Low-level input voltage | VIL | | | 1.8 | V | Tamb=-40 to +105C; VCC=6.0V | 9 |
| High-level output voltage | VOH | 1.9 | | | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=2.0V | 9 |
| High-level output voltage | VOH | 4.4 | | | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=4.5V | 9 |
| High-level output voltage | VOH | 5.9 | | | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-20uA; VCC=6.0V | 9 |
| High-level output voltage | VOH | 3.7 | | | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-6.0mA; VCC=4.5V | 9 |
| High-level output voltage | VOH | 5.2 | | | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=-7.8mA; VCC=6.0V | 9 |
| Low-level output voltage | VOL | | | 0.1 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=20uA; VCC=2.0V | 9 |
| Low-level output voltage | VOL | | | 0.4 | V | Tamb=-40 to +105C; VI=VIH or VIL; IO=6.0mA; VCC=4.5V | 9 |
| Input leakage current | II | -1 | | 1 | uA | Tamb=-40 to +105C; VI=VCC or GND; VCC=6.0V | 9 |
| Off-state output current | IOZ | -10 | | 10 | uA | Tamb=-40 to +105C; VI=VIH or VIL; VCC=6.0V; VO=VCC or GND | 9 |
| Quiescent supply current | ICC | | | 160 | uA | Tamb=-40 to +105C; VI=VCC or GND; IO=0A; VCC=6.0V | 9 |
| Propagation delay nAn to nYn | tpd | | | 165 | ns | Tamb=-40 to +105C; VCC=2.0V | 12 |
| Propagation delay nAn to nYn | tpd | | | 33 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 |
| Propagation delay nAn to nYn | tpd | | | 28 | ns | Tamb=-40 to +105C; VCC=6.0V | 12 |
| Enable time nOE to nYn | ten | | | 45 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 |
| Disable time nOE to nYn | tdis | | | 45 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 |
| Transition time | tt | | | 18 | ns | Tamb=-40 to +105C; VCC=4.5V | 12 |
## CAD (KiCad official)
- Symbol: `AIP74HC244TA20.TR`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `aip74hc244ta20-tr-etched.step` / `aip74hc244ta20-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aip74hc244ta20-tr.step` / `aip74hc244ta20-tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Wuxi I-core Elec datasheet](docs/aip74hc244ta20-tr-datasheet.pdf) (18 pp, sha256 `8a752d8af77d4618`, retrieved 2026-10-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/aip74hc244ta20-tr-datasheet.pdf)