SN54ABT16374, SN74ABT16374 16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS

features

• Members of the Texas Instruments Widebus^TM Family
• State-of-the-Art EPIC-IIB^TM BiCMOS Design Significantly Reduces Power Dissipation
• ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
• Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
• Typical V_OLP (Output Ground Bounce) < 0.8 V at V_CC = 5 V, T_A = 25°C
• Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
• Flow-Through Architecture Optimizes PCB Layout
• High-Drive Outputs (-32-mA I_OH, 64-mA I_OL)
• Packaged in Plastic 300-mil Shrink Small-Outline Packages (DL) and 380-mil Fine-Pitch Ceramic Flat Packages (WD) Using 25-mil Center-to-Center Spacings

  Widebus and EPIC-IIB are trademarks of Texas Instruments Incorporated.

description

The 'ABT16374 is a 16-bit edge-triggered D-type flip-flop with3-state outputs designed specifically for driving highly capacitiveor relatively low-impedance loads. It is particularly suitable forimplementing buffer registers, I/O ports, bidirectional bus drivers,and working registers.

The device can be used as two 8-bit flip-flops or one 16-bitflip-flop. On the positive transition of the clock (CLK) input, the Qoutputs of the flip-flop take on the logic levels set up at the data(D) inputs.

A buffered output-enable () input can be used to place the eight outputs in eithera normal logic state (high or low logic levels) or a high-impedancestate. In the high-impedance state, the outputs neither load nordrive the bus lines significantly. The high-impedance state and theincreased drive provide the capability to drive bus lines withoutneed for interface or pullup components

The output enable ()does not affect internal operations of the flip-flop. Old data can beretained or new data can be entered while the outputs are in thehigh-impedance state.

To ensure the high-impedance state during power up or power down, should be tiedto V_CC through a pullup resistor; the minimum value of theresistor is determined by the current-sinking capability of thedriver.

The SN74ABT16374 is packaged in TI's shrink small-outline package(DL), which provides twice the I/O pin count and functionality ofstandard small-outline packages in the same printed-circuit-boardarea.

The SN54ABT16374 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74ABT16374 is characterized for operation from -40°C to85°C.

View more information about generic part numbers:SN74ABT16374

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(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
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