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CY74FCT245T
  • CY74FCT245T
  • CY74FCT245T
  • CY74FCT245T

CY74FCT245T

ACTIVE

Octal Bus Transceivers with 3-State Outputs

Texas Instruments CY74FCT245T Product Info

1 April 2026 2

Parameters

Supply voltage (min) (V)

4.75

Supply voltage (max) (V)

5.25

Number of channels

8

IOL (max) (mA)

64

IOH (max) (mA)

-32

Input type

TTL

Output type

TTL

Features

Partial power down (Ioff), Very high speed (tpd 5-10ns)

Technology family

FCT

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Package

PDIP (N)-20-228.702 mm² 24.33 x 9.4

Features

  • Function, Pinout, and Drive Compatible With FCT and F Logic
  • Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
  • Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
  • Ioff Supports Partial-Power-Down Mode Operation
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Matched Rise and Fall Times
  • Fully Compatible With TTL Input and Output Logic Levels
  • CY54FCT245T
    • 48-mA Output Sink Current
      12-mA Output Source Current
  • CY74FCT245T
    • 64-mA Output Sink Current
      32-mA Output Source Current
  • 3-State Outputs

  • Function, Pinout, and Drive Compatible With FCT and F Logic
  • Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
  • Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
  • Ioff Supports Partial-Power-Down Mode Operation
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Matched Rise and Fall Times
  • Fully Compatible With TTL Input and Output Logic Levels
  • CY54FCT245T
    • 48-mA Output Sink Current
      12-mA Output Source Current
  • CY74FCT245T
    • 64-mA Output Sink Current
      32-mA Output Source Current
  • 3-State Outputs

Description

The x92FCT245T devices contain eight noninverting bidirectional buffers with 3-state outputs and are intended for bus-oriented applications.

The transmit/receive (T/R) input determines the direction of data flow through these bidirectional transceivers. Transmit (active high) enables data from A ports to B ports. The output enable (OE), when high, disables both the A and B ports by putting them in the high-impedance state.

These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

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