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SN74LVCZ245APWR
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Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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Datasheet
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README
markdownSN74LVCZ245APWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
SN74LVCZ245APWR from Texas Instruments, 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 | Direction-control input: a low level selects B-to-A data transfer and a high level selects A-to-B transfer; it accepts voltages up to 5.5 V. |
| 2 | A1 | bidirectional | A-bus data port 1, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 3 | A2 | bidirectional | A-bus data port 2, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 4 | A3 | bidirectional | A-bus data port 3, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 5 | A4 | bidirectional | A-bus data port 4, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 6 | A5 | bidirectional | A-bus data port 5, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 7 | A6 | bidirectional | A-bus data port 6, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 8 | A7 | bidirectional | A-bus data port 7, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 9 | A8 | bidirectional | A-bus data port 8, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | B8 | bidirectional | B-bus data port 8, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 12 | B7 | bidirectional | B-bus data port 7, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 13 | B6 | bidirectional | B-bus data port 6, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 14 | B5 | bidirectional | B-bus data port 5, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 15 | B4 | bidirectional | B-bus data port 4, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 16 | B3 | bidirectional | B-bus data port 3, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 17 | B2 | bidirectional | B-bus data port 2, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 18 | B1 | bidirectional | B-bus data port 1, a 3-state I/O that is high-impedance when OE is high; output current is limited to ±12 mA at 2.7 V and ±24 mA at 3 V. |
| 19 | OE | input | Output-enable input: a low level enables the transceiver and a high level isolates the A and B buses; tie it to VCC through a pullup resistor to hold the high-impedance state above 1.5 V. |
| 20 | VCC | power_in | Supply voltage, 2.7 V to 3.6 V recommended (absolute maximum 6.5 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| 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 | 2.7 | 3.6 | V | 3 | ||
| High-level input voltage | VIH | 2 | V | VCC = 2.7 V to 3.6 V | 3 | ||
| Low-level input voltage | VIL | 0.8 | V | VCC = 2.7 V to 3.6 V | 3 | ||
| Input voltage | VI | 0 | 5.5 | V | 3 | ||
| Output voltage (high or low state) | VO | 0 | V | High or low state | 3 | ||
| Output voltage (3-state) | VO | 0 | 5.5 | V | 3-state | 3 | |
| High-level output current | IOH | -12 | mA | VCC = 2.7 V | 3 | ||
| High-level output current | IOH | -24 | mA | VCC = 3 V | 3 | ||
| Low-level output current | IOL | 12 | mA | VCC = 2.7 V | 3 | ||
| Low-level output current | IOL | 24 | mA | VCC = 3 V | 3 | ||
| Input transition rise or fall rate | Δt/Δv | 6 | ns/V | 3 | |||
| Power-up ramp rate | Δt/ΔVCC | 150 | µs/V | 3 | |||
| Operating free-air temperature | TA | -40 | 85 | °C | 3 | ||
| Supply voltage range | VCC | -0.5 | 6.5 | V | 2 | ||
| Input voltage range | VI | -0.5 | 6.5 | V | 2 | ||
| Voltage applied to output in high-impedance or power-off state | VO | -0.5 | 6.5 | V | High-impedance or power-off state | 2 | |
| Voltage applied to output in high or low state | VO | -0.5 | V | High or low state | 2 | ||
| Input clamp current | IIK | -50 | mA | VI < 0 | 2 | ||
| Output clamp current | IOK | -50 | mA | VO < 0 | 2 | ||
| Continuous output current | IO | -50 | 50 | mA | 2 | ||
| Continuous current through VCC or GND | -100 | 100 | mA | 2 | |||
| Package thermal impedance (PW package) | θJA | 83 | °C/W | PW package, per JESD 51-7 | 2 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| High-level output voltage | VOH | 2.2 | V | IOH = -12 mA, VCC = 2.7 V | 3 | ||
| High-level output voltage | VOH | 2.4 | V | IOH = -12 mA, VCC = 3 V | 3 | ||
| Low-level output voltage | VOL | 0.2 | V | IOL = 100 µA, VCC = 2.7 V to 3.6 V | 3 | ||
| Low-level output voltage | VOL | 0.4 | V | IOL = 12 mA, VCC = 2.7 V | 3 | ||
| Low-level output voltage | VOL | 0.55 | V | IOL = 24 mA, VCC = 3 V | 3 | ||
| Control input leakage current | II | -5 | 5 | µA | Control inputs VI = 0 to 5.5 V, VCC = 3.6 V | 3 | |
| Power-off leakage current | Ioff | -5 | 5 | µA | VI or VO = 5.5 V, VCC = 0 | 3 | |
| 3-state output leakage current | IOZ | -5 | 5 | µA | VO = 0 to 5.5 V, VCC = 3.6 V | 3 | |
| Power-up 3-state output current | IOZPU | -5 | 5 | µA | VO = 0.5 V to 2.5 V, OE = don't care, VCC = 0 to 1.5 V | 3 | |
| Power-down 3-state output current | IOZPD | -5 | 5 | µA | VO = 0.5 V to 2.5 V, OE = don't care, VCC = 1.5 V to 0 | 3 | |
| Quiescent supply current | ICC | 100 | µA | VI = VCC or GND, IO = 0, VCC = 3.6 V | 3 | ||
| Additional supply current per input | ΔICC | 100 | µA | One input at VCC, 0.6 V, other inputs at VCC or GND, VCC = 2.7 V to 3.6 V | 3 | ||
| Propagation delay (A or B to B or A) | tpd | 7.3 | ns | VCC = 2.7 V ± 0.3 V | 4 | ||
| Propagation delay (A or B to B or A) | tpd | 1.5 | 6.3 | ns | VCC = 3.3 V ± 0.3 V | 4 | |
| Output enable time (OE to A or B) | ten | 9.5 | ns | VCC = 2.7 V ± 0.3 V | 4 | ||
| Output enable time (OE to A or B) | ten | 1.5 | 8.5 | ns | VCC = 3.3 V ± 0.3 V | 4 | |
| Output disable time (OE to A or B) | tdis | 8.5 | ns | VCC = 2.7 V ± 0.3 V | 4 | ||
| Output disable time (OE to A or B) | tdis | 1.7 | 7.5 | ns | VCC = 3.3 V ± 0.3 V | 4 |
CAD (KiCad official)
- Symbol:
SN74LVCZ245APWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74lvcz245apwr-etched.step/sn74lvcz245apwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74lvcz245apwr.step/sn74lvcz245apwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (21 pp, sha256
9865c81acc6a04f4, retrieved 2026-10-18, tier: manufacturer) - 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).