CY74FCT2257T 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 TTL Output Level Versions of Equivalent FCT Functions 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 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B - SEPTEMBER 1994 - REVISED OCTOBER 2001 Q OR SO PACKAGE (TOP VIEW) I0a I1a Ya I0b I1b Yb GND 1 2 3 4 5 6 7 8 16 VCC 15 OE 14 I0c 13 I1c 12 Yc 11 I0d 10 I1d 9 Yd description The CY74FCT2257T has four identical two-input multiplexers that select four bits of data from two sources under the control of a mon data-select (S) input. The I0 inputs are selected when S is low, and the I1 inputs are selected when S is high. Data appears at the output in noninverted form for the CY74FCT2257T. On-chip termination resistors at the outputs reduce system noise caused by reflections. The CY74FCT2257T can replace the FCT257T to reduce noise in an existing...