HD74ALVCH16543 - Hitachi Semiconductor

HD74ALVCH16543 16-bit Registered Transceivers with 3-state Outputs

The HD74ALVCH16543 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 in order to enter data from A or to output data from B. If .

Features

• VCC = 2.3 V to 3.6 V
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±24 mA (@V CC = 3.0 V)
• Bus hold on data inputs eliminates the need for external pullup / pulldown resistors HD74ALVCH16543 Function Table
*1 Inputs CEAB H X L L L LEAB X X H L L OEAB X H L L L A X X X L H Z Z B0 L H
*2 Output B H : High level L : Low level X : Immaterial Z : High impedance Notes 1. A to B data flow is shown; B to A flow control is the same except that it uses CEBA , LEBA, and OEBA. 2. Output level before the .