IDT74LVCHR16952A

NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

This 16-bit registered transceiver of the IDT74LVCHR16952A is built using advanced dual metal CMOS technology. This high-speed, low power device is organized as two independent 8-bit D-type registered transceivers with separate input and output control for independent control of data flow in either direction. For example, the A-to-B enable (CEAB) must be low to enter data from the A port. CLKAB controls the clocking function. When CLKAB toggles from lowto- high, the data present on the A port will be clocked into the register. OEABperforms the output enable function on the B port. Data flow from the B port to A port is similar but requires using CEBA, CLKBA, and OEBAinputs. Full 16-bit operation is achieved by tying the control pins of the independent transceivers together.

All pins of the IDT74LVCHR16952A can be driven from either 3.3V or 5V devices. This feature allows the use of this device as a translator in a mixed 3.3V/5V supply system.

The IDT74LVCHR16952A has series resistors in the device output structure which will significantly reduce line noise when used with light loads. The driver has been designed to drive ±12mA at the designated threshold levels.

The IDT74LVCHR16952A has "bus-hold" which retains the inputs' last state whenever the input goes to a high impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors.