SN74ALVC162827
20-BIT BUFFER/DRIVER
WITH SERIES-DAMPING RESISTORS AND 3-STATE OUTPUTS

SCAS511 - JULY 1995

features

• EPIC ^TM (Enhanced-Performance Implanted CMOS) Submicron Process
• Member of the Texas Instruments Widebus^TM Family
• Typical V_OLP (Output Ground Bounce) < 1 V at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHP (Output V_OH Undershoot) > 2 V at V_CC = 3.3 V, T_A = 25°C
• Supports Unregulated Battery Operation Down to 2.7 V
• Output Ports Have Equivalent 26- Series Resistors, So No External Resistors Are Required
• Bus Hold On Data Inputs Eliminatesthe Need for External Pullup/Pulldown Resistors
• Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages

  EPIC and Widebus are trademarks of Texas Instruments Incorporated.

description

This 20-bit noninverting buffer/driver is designed for 2.7-V to 3.6-V V_CC operation; it is tested at 2.5-V, 2.7-V, and 3.3-V V_CC.

The SN74ALVC162827 is composed of two 10-bit sections with separate output-enable signals. For either 10-bit buffer section, the two output-enable (1 and 1 or 2 and 2) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 10-bit buffer section are in the high-impedance state.

The SN74ALVC162827 is available in TI's shrink small-outline (DL) and thin shrink small-outline (DGG) packages, which provide twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The outputs, which are designed to sink up to 12 mA, include 26- resistors to reduce overshoot and undershoot.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN74ALVC162827 is characterized for operation from -40°C to 85°C.