CY74FCT2245T - Octal Bus Transceivers with 3-State Outputs and Series Damping Resistors

The CY74FCT2245T contains eight noninverting, bidirectional buffers with 3-state outputs intended for bus-oriented applications. On-chip termination resistors at the outputs reduce system noise caused by reflections. For this reason, the CY74FCT2245T can replace the CY74FCT245T in an existing design. The CY74FCT2245T current-sinking capability is 12 mA at the A and B ports.

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

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

Products containing the "CY74FCT2245T" keyword are: CY74FCT2245TPC , CY74FCT2245TQC , CY74FCT2245TQCT , CY74FCT2245TQCT , CY74FCT2245TQCT/FCT2245 , CY74FCT2245TQCTG4 , CY74FCT2245TS0CT , CY74FCT2245TSOC , CY74FCT2245TSOC , CY74FCT2245TSOCE4 , CY74FCT2245TSOCG4 , CY74FCT2245TSOCT , CY74FCT2245TSOCT , CY74FCT2245TSOCTE4 , CY74FCT2245TSOCTE4 , CY74FCT2245TSOCTG4

• Function and Pinout Compatible With FCT and F Logic
• 25- Output Series Resistors to Reduce Transmission-Line Reflection Noise
• Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
• I_off Supports Partial-Power-Down Mode Operation
• Fully Compatible With TTL Input and Output Logic Levels
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 1000-V Charged-Device Model (C101)
• 12-mA Output Sink Current
  15-mA Output Source Current
• 3-State Outputs