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FEATURES

· Member of the Texas Instruments Widebus?

Family

· EPIC? (Enhanced-Performance Implanted

CMOS) Submicron Process

· ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

· Latch-Up Performance Exceeds 250 mA Per

JESD 17

· Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

· Package Options Include Plastic Shrink

Small-Outline (DL) and Thin Shrink

Small-Outline (DGG) Packages

DESCRIPTION

This 12-bit to 24-bit multiplexed D-type latch is

designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH16260 is used in applications in

which two separate data paths must be multiplexed

onto, or demultiplexed from, a single data path.

Typical applications include multiplexing and/or

demultiplexing address and data information in

microprocessor or bus-interface applications. This

device also is useful in memory-interleaving

applications.

Three 12-bit I/O ports (A1-A12, 1B1-1B12, and

2B1-2B12) are available for address and/or data

transfer. The output-enable (OE1B, OE2B, and OEA)

inputs control the bus transceiver functions. The

OE1B and OE2B control signals also allow bank

control in the A-to-B direction.

Address and/or data information can be stored using the internal storage latches. The latch-enable (LE1B, LE2B,

LEA1B, and LEA2B) inputs are used to control data storage. When the latch-enable input is high, the latch is

transparent. When the latch-enable input goes low, the data present at the inputs is latched and remains latched

until the latch-enable input is returned high.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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

The SN74ALVCH16260 is characterized for operation from -40°C to 85°C.