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CY74FCT2245ATPC

Public Made by Adom

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Texas Instruments Buffers / Drivers, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentlogic icscy74fct2245atpcfactory-2.0.0extractor-text

Verified CY74FCT2245ATPC

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 20 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: CY74FCT2245ATPC · PDIP-20 · 20 pins
  • ✓copper: 20 copper pads, none touching another net
  • ✓datasheet: all 20 pin names found in the 20-page datasheet
  • ✓distributor: lcsc C1548704, digikey 2156-CY74FCT2245ATPC-ND, mouser 595-CY74FCT2245ATPC
  • ✓family: DIP-20_W7.62mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-kn2l5dim/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 20 pins = 20 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 20 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ cy74fct2245atpc.kicad_sym✓ cy74fct2245atpc.kicad_mod✓ cy74fct2245atpc.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 15h ago
viewers cy74fct2245atpc: viewers · Ray 15h ago
cy74fct2245atpc-etched.glb Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc-etched.step cy74fct2245atpc: factory component page (tier=mfr) · Ray 15h ago
cy74fct2245atpc-hero.glb cy74fct2245atpc: hero GLB from the etched model (keeps the MPN mark) · Ray 15h ago
cy74fct2245atpc-hero.overlay.json Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc.glb Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc.kicad_mod Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc.kicad_sym Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc.lbr Publish 0.1.0 · Ray 15h ago
cy74fct2245atpc.step Publish 0.1.0 · Ray 15h ago
package.json Publish 0.1.0 · Ray 15h ago
page.json Set visibility: public · Ray 15h ago
README.md Publish 0.1.0 · Ray 15h ago
verification.json Verified: Published by the parts factory: tier mfr, 20 pins · Ray 15h ago

CY74FCT2245ATPC

Texas Instruments · Buffers / Drivers · PDIP-20

CY74FCT2245ATPC from Texas Instruments, in a PDIP-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 T/R input Direction control: high enables data flow from A ports to B ports (transmit), and low enables data flow from B ports to A ports (receive).
2 A0 bidirectional A-port bus bit 0; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
3 A1 bidirectional A-port bus bit 1; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
4 A2 bidirectional A-port bus bit 2; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
5 A3 bidirectional A-port bus bit 3; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
6 A4 bidirectional A-port bus bit 4; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
7 A5 bidirectional A-port bus bit 5; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
8 A6 bidirectional A-port bus bit 6; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
9 A7 bidirectional A-port bus bit 7; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
10 GND power_in Device ground; all supply and input/output voltage limits are referenced to ground potential.
11 B7 bidirectional B-port bus bit 7; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
12 B6 bidirectional B-port bus bit 6; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
13 B5 bidirectional B-port bus bit 5; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
14 B4 bidirectional B-port bus bit 4; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
15 B3 bidirectional B-port bus bit 3; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
16 B2 bidirectional B-port bus bit 2; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
17 B1 bidirectional B-port bus bit 1; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
18 B0 bidirectional B-port bus bit 0; 3-state output with 12-mA output sink current and 15-mA output source current, and 25-Ω on-chip series output resistors, placed in high-impedance when OE is high.
19 OE input Output enable: when high, disables both the A and B ports into the high-impedance state.
20 VCC power_in Supply voltage, 4.75 V minimum, 5 V nominal, 5.25 V maximum per the recommended operating conditions.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package PDIP-20
Category Logic ICs
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 4.75 5 5.25 V 2
High-level input voltage VIH 2 V 2
Low-level input voltage VIL 0.8 V 2
High-level output current IOH -15 mA 2
Low-level output current IOL 12 mA 2
Operating free-air temperature TA -40 85 °C 2
Supply voltage range to ground potential -0.5 7 V 2
DC input voltage range -0.5 7 V 2
DC output voltage range -0.5 7 V 2
DC output current (maximum sink current/pin) 120 mA 2
Ambient temperature range with power applied TA -65 135 °C 2
Storage temperature range Tstg -65 150 °C 2
Package thermal impedance, P package θJA 69 °C/W P package, calculated per JESD 51-7 (see Note 1) 2
Low-level output voltage VOL 0.3 0.55 V VCC = 4.75 V, IOL = 12 mA 3
High-level output voltage VOH 2.4 3.3 V VCC = 4.75 V, IOH = -15 mA 3
Input clamp voltage VIK -0.7 -1.2 V VCC = 4.75 V, IIN = -18 mA 3
Output resistance Rout 20 25 40 Ω VCC = 4.75 V, IOL = 12 mA 3
High-level input current IIH -1 1 µA VCC = 5.25 V, VIN = 2.7 V 3
Low-level input current IIL -1 1 µA VCC = 5.25 V, VIN = 0.5 V 3
Short-circuit output current IOS -60 -120 -225 mA VCC = 5.25 V, VOUT = 0 V 3
Power-off leakage current Ioff -1 1 µA VCC = 0 V, VOUT = 4.5 V 3
Quiescent supply current ICC 0.1 0.2 mA VCC = 5.25 V, VIN ≤ 0.2 V, VIN ≥ VCC, 0.2 V 3
Supply current per TTL high input ΔICC 0.5 2 mA VCC = 5.25 V, VIN = 3.4 V, f1 = 0, Outputs open 3
Dynamic current per MHz ICCD 0.06 0.12 mA/MHz VCC = 5.25 V, one input switching at 50% duty cycle, outputs open, T/R = OE = GND, VIN ≤ 0.2 V or ≥ VCC, 0.2 V 3
Input capacitance Ci 5 10 pF 3
Output capacitance Co 9 12 pF 3
Propagation delay A or B to B or A tPLH/tPHL 1.5 4.6 ns AT grade (CY74FCT2245AT); from A or B to B or A; see Figure 1 4
Output enable time OE to A or B tPZH/tPZL 1.5 6.2 ns AT grade (CY74FCT2245AT); from OE to A or B; see Figure 1 4
Output disable time OE to A or B tPHZ/tPLZ 1.5 5 ns AT grade (CY74FCT2245AT); from OE to A or B; see Figure 1 4

CAD (KiCad official)

  • Symbol: CY74FCT2245ATPC
  • Footprint: Package_DIP:DIP-20_W7.62mm
  • 3D model: PDIP-20 (KiCad packages3D, STEP)
  • 3D model files: cy74fct2245atpc-etched.step / cy74fct2245atpc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cy74fct2245atpc.step / cy74fct2245atpc.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (20 pp, sha256 05d1943fba1cf78f, retrieved 2026-10-30, 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