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AiP74HCT245TA20.TR
Public Made by Adomby adom
Wuxi I-core Elec Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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Symbol & Footprint
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README
markdownAiP74HCT245TA20.TR
Wuxi I-core Elec · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
AiP74HCT245TA20.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 | DIR | input | Transfer direction control input: per the function table, with OE low, DIR low transfers B data to A and DIR high transfers A data to B. |
| 2 | A0 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 3 | A1 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 4 | A2 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 5 | A3 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 6 | A4 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 7 | A5 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 8 | A6 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 9 | A7 | bidirectional | Bidirectional data input/output of the A bus; the output goes to high-impedance (Z) when OE is high. |
| 10 | GND | power_in | Ground reference, 0 V. |
| 11 | B7 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 12 | B6 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 13 | B5 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 14 | B4 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 15 | B3 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 16 | B2 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 17 | B1 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 18 | B0 | bidirectional | Bidirectional data input/output of the B bus; the output goes to high-impedance (Z) when OE is high. |
| 19 | OE | input | Output enable input, active low; when driven high the outputs are placed in the high-impedance (Z) state. |
| 20 | VCC | power_in | Supply voltage; for AiP74HCT245 the recommended range is 4.5 V to 5.5 V (typ. 5.0 V), and the absolute maximum rating is -0.5 V to +7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| Package | TSSOP-20 |
| Category | Logic |
| 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 | 8 | ||
| Input clamp current | IIK | -20 | 20 | mA | VI<-0.5V or VI>VCC+0.5V | 8 | |
| Output clamp current | IOK | -20 | 20 | mA | VO<-0.5V or VO>VCC+0.5V | 8 | |
| Output current | IO | -35 | 35 | mA | -0.5V<VO<VCC+0.5V | 8 | |
| Supply current | ICC | 70 | mA | 8 | |||
| Storage temperature | Tstg | -65 | 150 | ℃ | 8 | ||
| Total power dissipation | Ptot | 500 | mW | 8 | |||
| Supply voltage (AiP74HCT245) | VCC | 4.5 | 5 | 5.5 | V | 8 | |
| Input voltage | VI | 0 | V | 8 | |||
| Output voltage | VO | 0 | V | 8 | |||
| Input rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC=4.5V | 8 | |
| Operating ambient temperature | Tamb | -40 | 125 | ℃ | 8 | ||
| High-level input voltage | VIH | 2 | 1.6 | V | VCC=4.5V～5.5V | 9 | |
| Low-level input voltage | VIL | 1.2 | 0.8 | V | VCC=4.5V～5.5V | 9 | |
| High-level output voltage | VOH | 4.4 | 4.5 | V | VI=VIH or VIL; VCC=4.5V; IO=-20uA | 9 | |
| High-level output voltage | VOH | 3.98 | 4.32 | V | VI=VIH or VIL; VCC=4.5V; IO=-6.0mA | 9 | |
| Low-level output voltage | VOL | 0 | 0.1 | V | VI=VIH or VIL; VCC=4.5V; IO=20uA | 9 | |
| Low-level output voltage | VOL | 0.15 | 0.26 | V | VI=VIH or VIL; VCC=4.5V; IO=6.0mA | 9 | |
| Input leakage current | II | -1 | 1 | uA | VI=VCC or GND; VCC=5.5V | 9 | |
| Off-state output current | IOZ | -1 | 1 | uA | VI=VIH or VIL; VCC=5.5V; VO=VCC or GND | 9 | |
| Quiescent supply current | ICC | 8 | uA | VI=VCC or GND; IO=0A; VCC=5.5V | 9 | ||
| Additional supply current per An or Bn input | ΔICC | 144 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 9 | ||
| Additional supply current per OE input | ΔICC | 540 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 9 | ||
| Additional supply current per DIR input | ΔICC | 324 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 9 | ||
| High-level input voltage (-40 to +85 ℃) | VIH | 2 | V | VCC=4.5V～5.5V | 10 | ||
| Low-level input voltage (-40 to +85 ℃) | VIL | 0.8 | V | VCC=4.5V～5.5V | 10 | ||
| High-level output voltage (-40 to +85 ℃) | VOH | 4.4 | V | VI=VIH or VIL; VCC=4.5V; IO=-20uA | 10 | ||
| High-level output voltage (-40 to +85 ℃) | VOH | 3.84 | V | VI=VIH or VIL; VCC=4.5V; IO=-6.0mA | 10 | ||
| Low-level output voltage (-40 to +85 ℃) | VOL | 0.1 | V | VI=VIH or VIL; VCC=4.5V; IO=20uA | 10 | ||
| Low-level output voltage (-40 to +85 ℃) | VOL | 0.33 | V | VI=VIH or VIL; VCC=4.5V; IO=6.0mA | 10 | ||
| Input leakage current (-40 to +85 ℃) | II | -1 | 1 | uA | VI=VCC or GND; VCC=5.5V | 10 | |
| Off-state output current (-40 to +85 ℃) | IOZ | -5 | 5 | uA | VI=VIH or VIL; VCC=5.5V; VO=VCC or GND | 10 | |
| Quiescent supply current (-40 to +85 ℃) | ICC | 80 | uA | VI=VCC or GND; IO=0A; VCC=5.5V | 10 | ||
| Additional supply current per An or Bn input (-40 to +85 ℃) | ΔICC | 180 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 10 | ||
| Additional supply current per OE input (-40 to +85 ℃) | ΔICC | 675 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 10 | ||
| Additional supply current per DIR input (-40 to +85 ℃) | ΔICC | 405 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 10 | ||
| High-level input voltage (-40 to +125 ℃) | VIH | 2 | V | VCC=4.5V～5.5V | 11 | ||
| Low-level input voltage (-40 to +125 ℃) | VIL | 0.8 | V | VCC=4.5V～5.5V | 11 | ||
| High-level output voltage (-40 to +125 ℃) | VOH | 4.4 | V | VI=VIH or VIL; VCC=4.5V; IO=-20uA | 11 | ||
| High-level output voltage (-40 to +125 ℃) | VOH | 3.7 | V | VI=VIH or VIL; VCC=4.5V; IO=-6.0mA | 11 | ||
| Low-level output voltage (-40 to +125 ℃) | VOL | 0.1 | V | VI=VIH or VIL; VCC=4.5V; IO=20uA | 11 | ||
| Low-level output voltage (-40 to +125 ℃) | VOL | 0.4 | V | VI=VIH or VIL; VCC=4.5V; IO=6.0mA | 11 | ||
| Input leakage current (-40 to +125 ℃) | II | -1 | 1 | uA | VI=VCC or GND; VCC=5.5V | 11 | |
| Off-state output current (-40 to +125 ℃) | IOZ | -10 | 10 | uA | VI=VIH or VIL; VCC=5.5V; VO=VCC or GND | 11 | |
| Quiescent supply current (-40 to +125 ℃) | ICC | 160 | uA | VI=VCC or GND; IO=0A; VCC=5.5V | 11 | ||
| Additional supply current per An or Bn input (-40 to +125 ℃) | ΔICC | 196 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 11 | ||
| Additional supply current per OE input (-40 to +125 ℃) | ΔICC | 735 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 11 | ||
| Additional supply current per DIR input (-40 to +125 ℃) | ΔICC | 441 | uA | per input pin; VI=VCC-2.1V; other inputs at VCC or GND; VCC=4.5V～5.5V; IO=0A | 11 | ||
| Propagation delay An to Bn or Bn to An | tPLH, tPHL | 12 | 22 | ns | VCC=4.5V; 见图4 | 12 | |
| Output enable time OE to An or Bn | tPZL, tPZH | 16 | 30 | ns | VCC=4.5V；见图5 | 12 | |
| Output disable time OE to An or Bn | tPLZ, tPHZ | 16 | 30 | ns | VCC=4.5V；见图5 | 12 | |
| Output transition time | tTHL, tTLH | 5 | 12 | ns | VCC=4.5V；见图4 | 12 | |
| Propagation delay An to Bn or Bn to An (-40 to +85 ℃) | tPLH, tPHL | 28 | ns | VCC=4.5V；见图4 | 13 | ||
| Output enable time OE to An or Bn (-40 to +85 ℃) | tPZL, tPZH | 38 | ns | VCC=4.5V；见图5 | 13 | ||
| Output disable time OE to An or Bn (-40 to +85 ℃) | tPLZ, tPHZ | 38 | ns | VCC=4.5V；见图5 | 13 | ||
| Output transition time (-40 to +85 ℃) | tTHL, tTLH | 15 | ns | VCC=4.5V；见图4 | 13 | ||
| Propagation delay An to Bn or Bn to An (-40 to +125 ℃) | tPLH, tPHL | 33 | ns | VCC=4.5V；见图4 | 14 | ||
| Output enable time OE to An or Bn (-40 to +125 ℃) | tPZL, tPZH | 45 | ns | VCC=4.5V；见图5 | 14 | ||
| Output disable time OE to An or Bn (-40 to +125 ℃) | tPLZ, tPHZ | 45 | ns | VCC=4.5V；见图5 | 14 | ||
| Output transition time (-40 to +125 ℃) | tTHL, tTLH | 18 | ns | VCC=4.5V；见图4 | 14 |
CAD (KiCad official)
- Symbol:
AiP74HCT245TA20.TR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
aip74hct245ta20-tr-etched.step/aip74hct245ta20-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aip74hct245ta20-tr.step/aip74hct245ta20-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi I-core Elec datasheet (22 pp, sha256
d0edadc0b13c66c2, 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).