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SN74LS670N

4 x 4 Register File with 3-State Outputs

ON Semiconductor 

SN74LS670

4 x 4 Register File

with 3-State Outputs

The TTL / MSI SN74LS670 is a high-speed, low-power 4 x 4

Register File organized as four words by four bits. Separate read and

write inputs, both address and enable, allow simultaneous read and

write operation.

The 3-state outputs make it possible to connect up to 128 outputs to

increase the word capacity up to 512 words. Any number of these

devices can be operated in parallel to generate an n-bit length.

• Simultaneous Read / Write Operation

• Expandable to 512 Words by n-Bits

• Typical Access Time to 20 ns

• 3-State Outputs for Expansion

• Typical Power Dissipation of 125 mW

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min Typ Max Unit

VCC

Supply Voltage

TA

Operating Ambient

Temperature Range

4.75 5.0 5.25

V

0

25

70

°C

IOH

Output Current – High

IOL

Output Current – Low

– 2.6 mA

24

mA

http://onsemi.com

LOW

POWER

SCHOTTKY

16

1

PLASTIC

N SUFFIX

CASE 648

16

1

SOIC

D SUFFIX

CASE 751B

ORDERING INFORMATION

Device

Package

Shipping

SN74LS670N 16 Pin DIP 2000 Units/Box

SN74LS670D

16 Pin

2500/Tape & Reel

© Semiconductor Components Industries, LLC, 1999

1

December, 1999 – Rev. 6

Publication Order Number:

SN74LS670/D

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