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Members of the Texas Instruments

WidebusE Family

State-of-the-Art EPIC-IIBE BiCMOS Design

Significantly Reduces Power Dissipation

Typical VOLP (Output Ground Bounce) < 1 V

at VCC = 5 V, TA = 25°C

High-Impedance State During Power Up

and Power Down

Distributed VCC and GND Pin Configuration

Minimizes High-Speed Switching Noise

Flow-Through Architecture Optimizes PCB

Layout

High-Drive Outputs (–32-mA IOH, 64-mA IOL)

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

Latch-Up Performance Exceeds 500 mA Per

JESD 17

Package Options Include Plastic Shrink

Small-Outline (DL), Thin Shrink

Small-Outline (DGG), and Thin Very

Small-Outline (DGV) Packages and 380-mil

Fine-Pitch Ceramic Flat (WD) Package

Using 25-mil Center-to-Center Spacings

description

The ’ABTH16245 devices are 16-bit noninverting

3-state transceivers that provide synchronous

two-way communication between data buses.

The control-function implementation minimizes

external timing requirements.

These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow data transmission

from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control

(DIR) input. The output-enable (OE) input can be used to disable the devices so that the buses are effectively

isolated.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.

However, to ensure the high-impedance state above 2.1 V, 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 SN54ABTH16245 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ABTH16245 is characterized for operation from –40°C to 85°C.