dm74ls962 National Semiconductor Corporation, dm74ls962 Datasheet

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dm74ls962

Manufacturer Part Number
dm74ls962
Description
Dual Rank 8-bit Tri-state Shift Register
Manufacturer
National Semiconductor Corporation
Datasheet

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C 1995 National Semiconductor Corporation
DM74LS962 (DM86LS62)
Dual Rank 8-Bit TRI-STATE Shift Register
General Description
These circuits are TRI-STATE edge-triggered 8-bit I O reg-
isters in parallel with 8-bit serial shift registers which are
capable of operating in any of the following modes parallel
load from I O pins to register ‘‘A’’ parallel transfer down
from register ‘‘A’’ to serial shift register ‘‘B’’ parallel transfer
up from shift register ‘‘B’’ to register ‘‘A’’ serial shift of regis-
ter ‘‘B’’ or exchange data between register ‘‘A’’ and shift
register ‘‘B’’ Since the registers are edge-triggered by the
positive transition of the clock the control lines which deter-
mine the mode or operation are completely independent of
the logic level applied to the clock Designed for bus-orient-
ed systems these circuits have their TRI-STATE inputs and
outputs on the same pins
Connection Diagram
TRI-STATE is a registered trademark of National Semiconductor Corporation
Order Number DM74LS962N or DM86LS62N
See NS Package Number N18A
Dual-In-Line Package
TL F 6438
Top View
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Registers are edge-triggered by the positive transition
of the clock
All inputs are PNP transistors
Input disable dominates over output disable
Output high impedance state does not impede any oth-
er mode of operation
8-bit I O pins are TRI-STATE buffers
Typical shift frequency is 36 MHz
Typical power dissipation is 305 mW
All control inputs are active when in an ‘‘L’’ logic state
Devices can be cascaded into N-bit word
TL F 6438 – 1
Pin Description
DIS
I
DIS
DIS
DIS
DIS
O
CLK Clock
GND Ground
I O 1
V
S
CC
S
O
I
TU
TD
S
Serial input
Serial output
Supply Voltage
Input disable
Shift disable
Output disable
Transfer up disable
Transfer down disable
I O 8 8-bit I O pins
RRD-B30M105 Printed in U S A
August 1991

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dm74ls962 Summary of contents

Page 1

... TRI-STATE inputs and outputs on the same pins Connection Diagram Dual-In-Line Package Top View Order Number DM74LS962N or DM86LS62N See NS Package Number N18A TRI-STATE is a registered trademark of National Semiconductor Corporation C 1995 National Semiconductor Corporation TL F 6438 Features ...

Page 2

Absolute Maximum Ratings Supply Voltage Input Voltage Operating Free Air Temperature Range DM74LS DM86LS Storage Temperature Range b Lead Temperature (Soldering 10 seconds) Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V High-Level Input Voltage IH V Low-Level Input ...

Page 3

Switching Characteristics Symbol Parameter f Maximum Clock Frequency MAX t Propagation Delay Time Low-to-High-Level PLH from Clock to Any Outputs t Propagation Delay Time High-to-Low Level PHL from Clock to Any Outputs t Enable Time from Any Control Inputs ENABLE ...

Page 4

4 ...

Page 5

Timing Diagram 6438 – 3 ...

Page 6

AC Test Circuit and Switching Time Waveforms All input pulses are supplied by generators having Cascading Packages PRR s 1MHz Z 50X OUT Cascading Packages for N-Bit Word 6 All ...

Page 7

7 ...

Page 8

... Physical Dimensions inches (millimeters) 18-Lead Molded Dual-In-Line Package (N) Order Number DM74LS962N or DM86LS62N LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein ...

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