dm74ls299 National Semiconductor Corporation, dm74ls299 Datasheet

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dm74ls299

Manufacturer Part Number
dm74ls299
Description
8-input Universal Shift/storage Register With Common Parallel I/o Pins
Manufacturer
National Semiconductor Corporation
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
dm74ls299N
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
C 1995 National Semiconductor Corporation
DM54LS299 DM74LS299
8-Input Universal Shift Storage Register
with Common Parallel I O Pins
General Description
The ’LS299 is an 8-bit universal shift storage register with
TRI-STATE
ble hold (store) shift left shift right and load data The par-
allel load inputs and flip-flop outputs are multiplexed to re-
duce the total number of package pins Separate outputs
are provided for flip-flops Q0 and Q7 to allow easy cascad-
ing A separate active LOW Master Reset is used to reset
the register
Connection Diagram
TRI-STATE is a registered trademark of National Semiconductor Corporation
outputs Four modes of operation are possi-
TL F 9827
See NS Package Number E20A J20A M20B N20A or W20A
Order Number DM54LS299E DM54LS299J DM54LS299W
Pin Names
CP
D
D
S0 S1
MR
OE1 OE2
I O0 – I O7
Q0 – Q7
S0
S7
DM74LS299WM or DM74LS299N
Dual-In-Line Package
Clock Pulse Input (Active Rising Edge)
Serial Data Input for Right Shift
Serial Data Input for Left Shift
Mode Select Inputs
Asynchronous Master Reset Input
(Active LOW)
TRI-STATE Output Enable Inputs
(Active LOW)
Parallel Data Inputs or TRI-STATE
Parallel Outputs
Serial Outputs
Features
Y
Y
Y
Y
Description
Common I O for reduced pin count
Four operation modes shift left shift right load and
store
Separate shift right serial input and shift left serial input
for easy cascading
TRI-STATE outputs for bus oriented applications
TL F 9827 – 1
RRD-B30M115 Printed in U S A
June 1992

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dm74ls299 Summary of contents

Page 1

... Y for easy cascading TRI-STATE outputs for bus oriented applications Y Dual-In-Line Package TL F 9827 – 1 DM74LS299WM or DM74LS299N Description Clock Pulse Input (Active Rising Edge) Serial Data Input for Right Shift Serial Data Input for Left Shift Mode Select Inputs Asynchronous Master Reset Input ...

Page 2

... DM54 e OH Max Q0 Q7 DM74 I O0 – Min I Max DM54 e OL Min DM74 Min DM74 e CC Max V 10V (DM54) Inputs DM74LS299 Units Min Nom Max ...

Page 3

Electrical Characteristics Over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter I High Level Input Current Low Level Input Current Short Circuit Output Current (Note 2) ...

Page 4

Functional Description The ’LS299 contains eight edge-triggered D-type flip-flops and the interstage logic necessary to perform synchronous shift left shift right parallel load and hold operations The type of operation is determined by the S0 and S1 as shown in ...

Page 5

Logic Diagram 5 ...

Page 6

Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) 20-Lead Ceramic Dual-In-Line Package (J) Order Number DM54LS299E NS Package Number E20A Order Number DM54LS299J NS Package Number J20A 6 ...

Page 7

... Physical Dimensions inches (millimeters) (Continued) 20-Lead Wide Small Outline Molded Package (M) 20-Lead Molded Dual-In-Line Package (N) Order Number DM74LS299WM NS Package Number M20B Order Number DM74LS299N NS Package Number N20A 7 ...

Page 8

Physical Dimensions inches (millimeters) (Continued) 20-Lead Ceramic Flat Package (W) 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 ...

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