Members of the Texas Instruments

WidebusE Family

3-State True Outputs

Full Parallel Access for Loading

Flow-Through Architecture Optimizes

PCB Layout

Distributed VCC and GND Pin Configuration

Minimizes High-Speed Switching Noise

EPICE (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 ’AC16374 are 16-bit edge-triggered D-type

flip-flops with 3-state outputs designed

specifically for driving highly capacitive or

relatively low-impedance loads. They are

particularly suitable for implementing buffer

registers, I/O ports, bidirectional bus drivers, and

working registers.

The ’AC16374 can be used as two 8-bit flip-flops or one 16-bit flip-flop. On the positive transition of the clock

(CLK) input, the Q outputs of the flip-flop take on the logic levels set up at the data (D) inputs.

A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high

or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive

the bus lines significantly.

OE does not affect the internal operations of the flip-flop. Old data can be retained or new data can be entered

while the outputs are in the high-impedance state.

The 74AC16374 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and

functionality of standard small-outline packages in the same printed-circuit-board area.

The 54AC16374 is characterized for operation over the full military temperature range of –55°C to 125°C. The

74AC16374 is characterized for operation from –40°C to 85°C.