NSC DM54LS299J-883, DM54LS299E-883 Datasheet

TL/F/9827

DM54LS299/DM74LS299 8-Input Universal Shift/Storage Register

with Common Parallel I/O Pins

June 1992

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

É

outputs. Four modes of operation are possi­ble: hold (store), shift left, shift right and load data. The par­allel load inputs and flip-flop outputs are multiplexed to re­duce the total number of package pins. Separate outputs
are provided for flip-flops Q0 and Q7 to allow easy cascad­ing. A separate active LOW Master Reset is used to reset
the register.

Features

Y

Common I/O for reduced pin count

Y

Four operation modes: shift left, shift right, load and
store

Y

Separate shift right serial input and shift left serial input
for easy cascading

Y

TRI-STATE outputs for bus oriented applications

Connection Diagram

Dual-In-Line Package

TL/F/9827– 1

Order Number DM54LS299E, DM54LS299J, DM54LS299W,

DM74LS299WM or DM74LS299N

See NS Package Number E20A, J20A, M20B, N20A or W20A

Pin Names Description

CP Clock Pulse Input (Active Rising Edge)
D

S0

Serial Data Input for Right Shift

D

S7

Serial Data Input for Left Shift
S0, S1 Mode Select Inputs
MR

Asynchronous Master Reset Input

(Active LOW)
OE1, OE2 TRI-STATE Output Enable Inputs

(Active LOW)
I/O0–I/O7 Parallel Data Inputs or TRI-STATE

Parallel Outputs
Q0–Q7 Serial Outputs

TRI-STATEÉis a registered trademark of National Semiconductor Corporation.

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings (Note)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Supply Voltage 7V

Input Voltage 7V

Operating Free Air Temperature Range

DM54

b

55§Ctoa125§C

DM74LS 0

§

Ctoa70§C

Storage Temperature Range

b

65§Ctoa150§C

Note:

The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran­teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.

Recommended Operating Conditions

Symbol Parameter

DM54LS299 DM74LS299

Units

Min Nom Max Min Nom Max

V

CC

Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

V

IH

High Level Input Voltage 2 2 V

V

IL

Low Level Input Voltage 0.7 0.8 V

I

OH

High Level Output Current Q0, Q7

b

0.4

b

0.4 mA

I/O0–I/O7

b

2.6

b

2.6 mA

I

OL

Low Level Output Current Q0, Q7 4 8 mA

I/O0–I/O7 12 24 mA

T

A

Free Air Operating Temperature

b

55 125 0 70

§

C

ts(H) Setup Time HIGH or LOW 24 24

ns

ts(L) S0 or S1 to CP 24 24

th(H) Hold Time HIGH or LOW 5 0

ns

t

h

(L) S0 or S1 to CP 5 0

ts(H) Setup Time HIGH or LOW 15 10

ns

t

s

(L) I/On,DS0,DS7to CP 15 10

th(H) Hold Time HIGH or LOW 5 0

ns

th(L) I/On,DS0,DS7to CP 5 0

tw(H) CP Pulse Width HIGH or LOW 15 15

ns

t

w

(L) 15 15

tw(L) MR Pulse Width LOW 15 15 ns

t

rec

Recovery Time

10 10 ns

MR

to CP

Electrical Characteristics

Over recommended operating free air temperature range (unless otherwise noted)

Symbol Parameter Conditions Min

Typ

Max Units

(Note 1)

V

I

Input Clamp Voltage V

CC

e

Min, I

I

eb

18 mA

b

1.5 V

V

OH

High Level Output V

CC

e

Min, I

OH

e

Max DM54 2.5

Voltage V

IL

e

Max

Q0, Q7

DM74

2.7 3.4 V

I/O0–I/O7 2.4

V

OL

Low Level Output V

CC

e

Min, I

OL

e

Max DM54 0.4

Voltage V

IH

e

Min

DM74 0.35 0.5 V

I

OL

e

4 mA, V

CC

e

Min DM74 0.25 0.4

I

I

Input Current@Max V

CC

e

Max, V

I

e

10V (DM54) Inputs 0.1 mA

Input Voltage V

I

e

7V (DM74)

Sn 0.2 mA

2

Electrical Characteristics (Continued)

Over recommended operating free air temperature range (unless otherwise noted)

Symbol Parameter Conditions Min

Typ

Max Units

(Note 1)

I

IH

High Level Input Current V

CC

e

Max, V

I

e

2.7V Sn 40 mA

Inputs 20 mA

I

IL

Low Level Input Current V

CC

e

Max, V

I

e

0.4V Sn

b

0.8 mA

Inputs

b

0.4 mA

I

OS

Short Circuit V

CC

e

Max Q0,Q

7

b

20

b

100

mA

Output Current (Note 2)

I/O0–I/O

7

b

30

b

130

I

CC

Supply Current V

CC

e

Max, OEe4.5V 60 mA

I

OZH

TRI-STATE Output Off V

CC

e

Max

40 mA

Current High V

O

e

2.7V

I

OZL

TRI-STATE Output Off V

CC

e

Max

b

400 mA

Current Low V

O

e

0.4V

Note 1: All typicals are at V

CC

e

5V, T

A

e

25§C.

Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Switching Characteristics

V

CC

ea

5.0V, T

A

ea

25§C (See Section 1 for waveforms and load configurations)

Symbol Parameter

R

L

e

2kX

Units

C

L

e

15 pF

Min Max

f

max

Maximum Input Frequency 35 MHz

t

PLH

Propagation Delay 26

ns

t

PHL

CP to Q0 or Q7 28

t

PLH

Propagation Delay 25

ns

t

PHL

CP to I/O

n

35

t

PHL

Propagation Delay

28 ns

MR

to Q0 or Q7

t

PHL

Propagation Delay

35 ns

MR

to I/O

n

t

PZH

Output Enable Time 18

ns

t

PZL

25

t

PHZ

Output Disable Time 15

ns

t

PLZ

20

Logic Symbol

TL/F/9827– 2

V

CC

e

Pin 20

GND

e

Pin 10

3