SN54ALVTH162244, SN74ALVTH162244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS

SCES074A - JUNE 1996 - REVISED JULY 1996

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

features

• Members of the Texas Instruments Widebus^TM Family
• Output Ports Have Equivalent 30- Series Resistors, So No External Resistors Are Required
• High-Impedance State During Power Up and Power Down
• 5-V I/O Compatible
• High-Drive Capability (-12 mA/12 mA)
• Typical V_OLP (Output Ground Bounce) < 0.8 V at V_CC = 3.3 V, T_A = 25°C
• Auto 3-State Eliminates Bus Current Loading When Voltage at the Output Exceeds V_CC
• Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
• Power Off Disables Inputs/Outputs, Permitting Live Insertion
• Package Options Include Plastic 300-mil Shrink Small-Outline (DL), Thin Shrink Small-Outline (DGG), Thin Very Small-Outline (DGV) Packages, and 380-mil Fine-Pitch Ceramic Flat (WD) Package

Widebus is a trademark of Texas Instruments Incorporated.

description

The 'ALVTH162244 are 16-bit buffers/line drivers designed for low-voltage 2.5-V or 3.3-V V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

These devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. These devices provide true outputs and symmetrical active-low output-enable inputs.

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

When V_CC is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.2 V, should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

All outputs are designed to sink up to 12 mA and include 30- resistors to reduce overshoot and undershoot.

The SN74ALVTH162244 is available in TI's thin very small-outline package (DGV), which provides the same I/O pin count and functionality of standard Widebus packages in less than half the printed circuit board area.

The SN54ALVTH162244 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALVTH162244 is characterized for operation from -40°C to 85°C.