Members of the Texas Instruments

Widebus E Family

Independent Registers and Enables for A

and B Buses

Multiplexed Real-Time and Stored Data

Flow-Through Architecture Optimizes

PCB Layout

Distributed VCC and GND Pin

Configurations Minimize High-Speed

Switching Noise

EPIC E (Enhanced-Performance Implanted

CMOS) 1-mm Process

500-mA Typical Latch-Up Immunity at

125°C

Package Options Include Plastic 300-mil

Shrink Small-Outline (DL) Packages Using

25-mil Center-to-Center Pin Spacings and

380-mil Fine-Pitch Ceramic Flat (WD)

Packages Using 25-mil Center-to-Center

Pin Spacings

description

The ’AC16652 are 16-bit bus transceivers that

consist of D-type flip-flops and control circuitry

arranged for multiplexed transmission of data

directly from the data bus or from the internal

storage registers. They can be used as two 8-bit

transceivers or one 16-bit transceiver.

Complementary output-enable (OEAB and

OEBA) inputs are provided to control the

transceiver functions. Select-control (SAB and

SBA) inputs are provided to select whether

real-time or stored data is transferred. A low input

level selects real-time data, and a high input level

selects stored data. The circuitry used for select

control eliminates the typical decoding glitch that

occurs in a multiplexer during the transition

between stored and real-time data. Figure 1

illustrates the four fundamental bus-management

functions that can be performed with the

’AC16652.