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CY74FCT244DTSOCT

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Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CY74FCT244DTSOCT

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOIC-20-300mil

CY74FCT244DTSOCT from Texas Instruments, in a SOIC-20-300mil. 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 OEA input Active-low output enable for channel A; output drivers are disabled and in high-impedance state when this pin is held high.
2 DA0 input Data input bit 0 for channel A; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
3 OB0 tri_state Data output bit 0 for channel B; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
4 DA1 input Data input bit 1 for channel A; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
5 OB1 tri_state Data output bit 1 for channel B; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
6 DA2 input Data input bit 2 for channel A; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
7 OB2 tri_state Data output bit 2 for channel B; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
8 DA3 input Data input bit 3 for channel A; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
9 OB3 tri_state Data output bit 3 for channel B; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
10 GND power_in Circuit ground reference; connection point to negative power supply.
11 DB3 input Data input bit 3 for channel B; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
12 OA3 tri_state Data output bit 3 for channel A; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
13 DB2 input Data input bit 2 for channel B; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
14 OA2 tri_state Data output bit 2 for channel A; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
15 DB1 input Data input bit 1 for channel B; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
16 OA1 tri_state Data output bit 1 for channel A; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
17 DB0 input Data input bit 0 for channel B; TTL-compatible input levels with minimum high threshold VIH = 2V and maximum low threshold VIL = 0.8V.
18 OA0 tri_state Data output bit 0 for channel A; 3-state output with VOH minimum 2.4V and VOL maximum 0.55V, can source 32mA or sink 64mA.
19 OEB input Active-low output enable for channel B; output drivers are disabled and in high-impedance state when this pin is held high.
20 VCC power_in Positive supply voltage input; operating range 4.75V to 5.25V for the 0-70°C temperature grade variant.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-20-300mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: CY74FCT244DTSOCT
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: cy74fct244dtsoct-etched.step / cy74fct244dtsoct-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cy74fct244dtsoct.step / cy74fct244dtsoct.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (24 pp, sha256 0371a514e0948724, retrieved 2026-09-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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