SN54ACT16373, 74ACT16373

16-BIT D-TYPE TRANSPARENT LATCHES

WITH 3-STATE OUTPUTS

SCAS122C – MARCH 1990 – REVISED SEPTEMBER 1996

1

POST OFFICE BOX 655303

Widebus

t Family

PCB Layout

Minimizes High-Speed Switching Noise

CMOS) 1-

mm Process

125

°C

Small-Outline (DL) 300-mil 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 SN54ACT16373 and 74ACT16373 are 16-bit

D-type transparent latches 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. These devices can be used as

two 8-bit latches or one 16-bit latch. The Q outputs

of the latches follow the data (D) inputs if enable

C is taken high. When C is taken low, the Q outputs

are latched at the levels set up at the D inputs.

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

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

bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines

in a bus-organized system without need for interface or pullup components.

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

while the outputs are in the high-impedance state.

The 74ACT16373 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 SN54ACT16373 is characterized for operation over the full military temperature range of –55

°C to 125°C.

The 74ACT16373 is characterized for operation from –40

°C to 85°C.

Copyright

© 1996, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

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1OE

1Q1

1Q2

GND

1Q3

1Q4

1Q5

1Q6

GND

1Q7

1Q8

2Q1

2Q2

GND

2Q3

2Q4

2Q5

2Q6

GND

2Q7

2Q8

2OE

1C

1D1

1D2

GND

1D3

1D4

1D5

1D6

GND

1D7

1D8

2D1

2D2

GND

2D3

2D4

2D5

2D6

GND

2D7

2D8

2C

SN54ACT16373 . . . WD PACKAGE

74ACT16373 . . . DL PACKAGE

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