CY74FCT2245T Datasheet | Texas Instruments

D Function and Pinout patible With FCT and F Logic D 25-Ω Output Series Resistors to Reduce Transmission-Line Reflection Noise D Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics D Ioff Supports Partial-Power-Down Mode Operation D Fully patible With TTL Input and Output Logic Levels D ESD Protection Exceeds JESD 22 - 2000-V Human-Body Model (A114-A) - 200-V Machine Model (A115-A) - 1000-V Charged-Device Model (C101) D 12-m A Output Sink Current 15-m A Output Source Current D 3-State Outputs CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B - JULY 1994 - REVISED NOVEMBER 2001 P, Q, OR SO PACKAGE (TOP VIEW) T/R A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 OE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 description 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 m A 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 Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered...