SN74ALVCH16543 Datasheet | Texas Instruments

FEATURES - Member of the Texas Instruments Widebus™ Family - EPIC™ (Enhanced-Performance Implanted CMOS) Submicron Process - Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors - ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 p F, R = 0) - Latch-Up Performance Exceeds 250 m A Per JESD 17 - Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages DESCRIPTION This 16-bit registered transceiver is designed for 1.65-V to 3.6-V VCC operation. The SN74ALVCH16543 can be used as two 8-bit transceivers or one 16-bit transceiver. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low to enter data from A or to output data from B. If CEAB is low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B to A is similar, but requires using CEBA, LEBA, and OEBA. SN74ALVCH16543 16-BIT REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS SCES025E - JULY 1995 - REVISED OCTOBER 2004 DGG OR DL PACKAGE (TOP VIEW) 1OEAB 1 1LEAB 2 1CEAB 3 GND 4 1A1 5 1A2 6 VCC 7 1A3 8 1A4 9 1A5 10 GND 11 1A6 12 1A7 13 1A8 14 2A1 15 2A2 16 2A3 17 GND 18 2A4 19 2A5 20 2A6 21 VCC 22 2A7 23 2A8 24 GND 25 2CEAB 26 2LEAB 27 2OEAB 28 56 1OEBA 55 1LEBA 54 1CEBA 53 GND 52 1B1 51 1B2 50 VCC 49 1B3 48 1B4 47 1B5 46 GND 45 1B6 44 1B7 43 1B8 42 2B1 41 2B2 40 2B3 39 GND 38 2B4 37 2B5 36 2B6 35 VCC 34 2B7 33 2B8 32 GND 31 2CEBA 30 2LEBA 29 2OEBA To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by...