54ACT16474, 74ACT16474 18-BIT REGISTERED BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCAS238A - MAY 1992 - REVISED APRIL 1996

features

Members of the Texas Instruments Widebus^TM Family
Inputs Are TTL-Voltage Compatible
3-State Outputs Drive Bus Lines Directly
Flow-Through Architecture Optimizes PCB Layout
Distributed V_CC and GND Pin Configurations Minimize High-Speed Switching Noise
EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m 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

EPIC and Widebus are trademarks of Texas Instruments

description

The 'ACT16474 are noninverting 18-bit registered bus transceiverscomposed of two 9-bit sections with separate control signals. Foreither 9-bit transceiver section, data flow in the A-to-B mode iscontrolled by output-enable (1 or 2) and clock(1CLKAB or 2CLKAB) inputs. When 1 or 2 is low, thecorresponding outputs are active (high or low) and take on either thecurrent data on low-to-high transition of 1CLKAB or 2CLKAB or thepreviously stored data if 1CLKAB or 2CLKAB is low.

When 1 or 2 is high, the corresponding outputsare in the high-impedance state. 1 or 2 does notaffect the operation on the internal registers. Previously storeddata can be retained or new data can be entered while the outputs arein the high-impedance state.

Data flow from B to A is similar, but uses 1 and/or 2 and 1CLKBA and/or 2CLKBA.

The 74ACT16474 is packaged in TI's shrink small-outline package,which provides twice the I/O pin count and functionality of standardsmall-outline packages in the same printed-circuit-board area.

The 54ACT16474 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. The74ACT16474 is characterized for operation from -40°C to85°C.

Title: 18-BIT REGISTERED BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: REGISTERED TRANSCEIVERS
Device Functionality: 18-BIT REGISTERED BUS TRANSCEIVER
Orderable Devices: 74ACT16474DL

View the complete PDF datasheet: scas238a.pdf (121 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:74ACT16474

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