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SN74LVCC4245APWR

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Texas Instruments Buffer/Driver/Transceiver, TSSOP-24. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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SN74LVCC4245APWR

Texas Instruments · Buffer/Driver/Transceiver · TSSOP-24

SN74LVCC4245APWR from Texas Instruments, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCCA power_in A-port power supply. Recommended 4.5V to 5.5V. Also powers the control circuitry (DIR, OE). If VCCA < ~100mV, all I/O outputs are disabled and become high-impedance.
2 DIR input Direction control input (referenced to VCCA). DIR=High enables A->B data flow; DIR=Low enables B->A data flow. VIH/VIL referenced to VCCA.
3 A1 bidirectional A-port bit 1. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H or when either supply is below ~100mV.
4 A2 bidirectional A-port bit 2. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
5 A3 bidirectional A-port bit 3. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
6 A4 bidirectional A-port bit 4. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
7 A5 bidirectional A-port bit 5. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
8 A6 bidirectional A-port bit 6. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
9 A7 bidirectional A-port bit 7. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
10 A8 bidirectional A-port bit 8. Bidirectional I/O referenced to VCCA (4.5-5.5V). Drives up to -24mA/24mA. High-Z when OE=H.
11 GND power_in Device ground return. Tie to system ground; pins 11, 12, and 13 are all GND and must be connected.
12 GND power_in Device ground return. Tie to system ground; pins 11, 12, and 13 are all GND and must be connected.
13 GND power_in Device ground return. Tie to system ground; pins 11, 12, and 13 are all GND and must be connected.
14 B8 bidirectional B-port bit 8. Bidirectional I/O referenced to VCCB (2.7-5.5V). Drives up to -24mA/24mA (at VCCB=4.5V) or -12mA/12mA (at VCCB=2.7V). High-Z when OE=H.
15 B7 bidirectional B-port bit 7. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
16 B6 bidirectional B-port bit 6. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
17 B5 bidirectional B-port bit 5. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
18 B4 bidirectional B-port bit 4. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
19 B3 bidirectional B-port bit 3. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
20 B2 bidirectional B-port bit 2. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
21 B1 bidirectional B-port bit 1. Bidirectional I/O referenced to VCCB (2.7-5.5V). High-Z when OE=H.
22 OE input Output-enable input, active low (referenced to VCCA). OE=Low enables the transceiver; OE=High places both A and B ports in high-impedance, effectively isolating the buses.
23 NC unconnected No internal connection. Leave floating or tie to a plane per board convention.
24 VCCB power_in B-port power supply. Recommended 2.7V to 5.5V (nominal 3.3V). Sets the reference rail for B-side I/O drivers. If VCCB < ~100mV, all I/O outputs are disabled and become high-impedance.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-24
Category Logic
Pins 24

Ordering variants

Same part, different packaging or reel option.

  • SN74LVCC4245APWR
  • SN74LVCC4245APWRDB
  • SN74LVCC4245APWRDBR
  • SN74LVCC4245APWRDW
  • SN74LVCC4245APWRDWR
  • SN74LVCC4245APWRNS
  • SN74LVCC4245APWRNSR

CAD (KiCad official)

  • Symbol: SN74LVCC4245APWR
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)
  • 3D model files: sn74lvcc4245apwr-etched.step / sn74lvcc4245apwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvcc4245apwr.step / sn74lvcc4245apwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 ffffd4ad7f5d4eba, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF