54LVXC3245 Datasheet | National Semiconductor

.. 54LVXC3245 8-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE ® Outputs February 1999 54LVXC3245 8-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE ® Outputs General Description The LVXC3245 is a 24-pin dual-supply, 8-bit configurable voltage interface transceiver suited for real time configurable I/O applications. The VCCA pin accepts a 3V supply level. The A port is a dedicated 3V port. The VCCB pin accepts a 3V-to-5V supply level. The B port is configured to track the VCCB supply level respectively. A 5V level on the VCC pin will configure the I/O pins at a 5V level and a 3V VCC will configure the I/O pins at a 3V level. This device will allow the VCCB voltage source pin and I/O pins on the B port to float when OE is HIGH. This feature is necessary to buffer data to and from sockets that require live insertion and removal during normal operation. Features Bidirectional interface between 3V and 3V-to-5V buses Control inputs patible with TTL level Outputs source/sink up to 24 m A Available in Cerpack and CDIP package Implements patented EMI reduction circuitry Flexible VCCB operating range Allows B port and VCCB to float simultaneously when OE is HIGH n Functionally patible with the 54 series 245 n Standard Microcircuit Drawing (SMD) 5962-9861901 n n n n n n n Ordering Code Order Number 54LVXC3245W-QML 54LVXC3245J-QML Package Number W24A J24F Package Description 24-Lead (0.300" Wide) Ceramic Flatpack 24-Lead Ceramic Dual-in-line Logic Symbol Connection Diagram Pin Assignment for CDIP and Cerpack DS101032-1 Pin Descriptions Pin Names OE T/R A0- A7 B0- B7 Description Output Enable Input Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs DS101032-2 TRI-STATE ® is a registered trademark of National Semiconductor Corporation © 1999 National Semiconductor Corporation DS101032 .national. Truth Table Inputs OE L L H H = High Voltage Level L =...