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SN74ABT377APWR

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Texas Instruments Flip Flops, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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SN74ABT377APWR

Texas Instruments · Flip Flops · TSSOP-20

SN74ABT377APWR 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 CLKEN input Common clock-enable input: when low, D data is transferred to Q on the positive-going CLK edge, and the circuit is designed to prevent false clocking from CLKEN transitions.
2 1Q output Flip-flop 1 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
3 1D input Data input for flip-flop 1, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
4 2D input Data input for flip-flop 2, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
5 2Q output Flip-flop 2 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
6 3Q output Flip-flop 3 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
7 3D input Data input for flip-flop 3, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
8 4D input Data input for flip-flop 4, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
9 4Q output Flip-flop 4 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
10 GND power_in Ground reference for the device.
11 CLK input Buffered clock input; the flip-flops trigger on the positive-going edge, and the D input has no effect when CLK is at either a high or low level.
12 5Q output Flip-flop 5 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
13 5D input Data input for flip-flop 5, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
14 6D input Data input for flip-flop 6, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
15 6Q output Flip-flop 6 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
16 7Q output Flip-flop 7 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
17 7D input Data input for flip-flop 7, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
18 8D input Data input for flip-flop 8, captured on the CLK rising edge when CLKEN is low and meeting the setup and hold times in the timing requirements.
19 8Q output Flip-flop 8 output, which holds its previous state (Q0) while CLKEN is high; high-drive output rated at -32 mA IOH and 64 mA IOL.
20 VCC power_in Supply voltage, recommended range 4.5 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74ABT377APWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: sn74abt377apwr-etched.step / sn74abt377apwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74abt377apwr.step / sn74abt377apwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (25 pp, sha256 37f5822de8187c3f, retrieved 2026-10-08, tier: manufacturer)
  • 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