General Description

The ALVC16839 contains twenty non-inverting selectable buffered or registered paths. The device can be configured to operate in a registered, or flow through buffer mode by utilizing the register enable (REGE) and Clock (CLK) signals. The device operates in a 20-bit word wide mode. All outputs can be placed into 3-STATE through use of the OE pin. These devices are ideally suited for buffered or registered 168 pin and 200 pin SDRAM DIMM memory modules.

Features

■ Compatible with PC100 and PC133 DIMM module specifications

■ 1.65V to 3.6V VCC supply operation

■ 3.6V tolerant inputs and outputs

■ tPD (CLK to On)

3.7 ns max for 3.0V to 3.6V VCC

4.9 ns max for 2.3V to 2.7V VCC

8.8 ns max for 1.65V to 1.95V VCC

■ Power-off high impedance inputs and outputs

■ Supports live insertion and withdrawal (Note 1)

■ Uses patented noise/EMI reduction circuitry

■ Latchup conforms to JEDEC JED78

■ ESD performance:

Human body model > 2000V

Machine model > 200V