Texas Instruments SN74ALS534AN3, SN74ALS534ADW, SN74ALS534ADWR, SN74ALS534AN Datasheet

SN54ALS534A, SN74ALS534A, SN74AS534

OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS

WITH 3-STATE OUTPUTS

SDAS168B – APRIL 1982 – REVISED JUL Y 1996

D

3-State Bus Driving Inverting Outputs

D

Buffered Control Inputs

D

Package Options Include Plastic
Small-Outline (DW), Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) 300-mil DIPs

description

These octal D-type edge-triggered flip-flops
feature 3-state outputs designed specifically for
driving highly capacitive or relatively low­impedance loads. They are particularly suitable
for implementing buffer registers, I/O ports,
bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input,
the Q

outputs are set to the complement of the
logic states set up at the data (D) inputs. The
’ALS534A and SN74AS534 have inverted out­puts, but otherwise are functionally equivalent to
the ’ALS374A and SN74AS374.

A buffered output-enable (OE
eight outputs in either a normal logic state (high or
low logic levels) or a high-impedance state. In the
high-impedance state, the outputs neither load
nor drive the bus lines significantly. The
high-impedance state and increased drive
provide the capability to drive bus lines without
interface or pullup components.

) input places the

SN74ALS534A, SN74AS534 . . . DW OR N PACKAGE

SN54ALS534A ...J PACKAGE

(TOP VIEW)

OE

1

1Q

2

1D

3

2D

4

2Q

5

3Q

6

3D

7

4D

8
9

4Q

GND

SN54ALS534A . . . FK PACKAGE

10

(TOP VIEW)

1D1QOE

2D
2Q
3Q
3D
4D

3212019

4
5
6
7
8

910111213

4Q

GND

20
19
18
17
16
15
14
13
12
11

V

CLK

CC

5Q

V
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK

18
17
16
15
14

5D 8Q

CC

8D
7D
7Q
6Q
6D

OE

does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered

while the outputs are off.
The SN54ALS534A is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ALS534A and SN74AS534 are characterized for operation from 0°C to 70°C.

FUNCTION TABLE

(each flip-flop)

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.

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.

INPUTS

OE CLK D

L ↑ H L
L ↑ LH
LH or L X Q

H X X Z

OUTPUT

Q

0

Copyright  1996, Texas Instruments Incorporated

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1

SN54ALS534A, SN74ALS534A, SN74AS534
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS

SDAS168B – APRIL 1982 – REVISED JUL Y 1996

1

11

3
4
7
8
13
14
17
18

†

EN

C1

1D

logic symbol

OE

CLK

1D
2D
3D
4D
5D
6D
7D
8D

†

This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.

12
15
16
19

logic diagram (positive logic)

1

OE

11

CLK

12

2

1Q

5

2Q

6

3Q

9

4Q

5Q

2

1Q

5

2Q

6

3Q

9

4Q
5Q
6Q
7Q
8Q

1D

2D

3D

4D

5D

3

4

7

8

13

C1

1D

C1

1D

C1

1D

C1

1D

C1

1D

6D

7D

8D

14

17

18

1D

1D

1D

C1

C1

C1

15

16

19

6Q

7Q

8Q

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

UNIT

PARAMETER

TEST CONDITIONS

UNIT

V

V

VOLV

V

V

I

V

V

V

mA

SN54ALS534A, SN74ALS534A, SN74AS534

OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS

WITH 3-STATE OUTPUTS

SDAS168B – APRIL 1982 – REVISED JUL Y 1996

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, V
Input voltage, V

Voltage applied to a disabled 3-state output 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, T
Storage temperature range, T

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

: SN54ALS534A –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . .

A

SN74ALS534A 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

recommended operating conditions

SN54ALS534A SN74ALS534A

MIN NOM MAX MIN NOM MAX

V

CC

V

IH

V

IL

I

OH

I

OL

f

clock

t

w

t

su

t

h

T

A

Supply voltage 4.5 5 5.5 4.5 5 5.5 V
High-level input voltage 2 2 V
Low-level input voltage 0.7 0.8 V
High-level output current –1 –2.6 mA
Low-level output current 12 24 mA
Clock frequency 0 30 0 35 MHz
Pulse duration, CLK high or low 16.5 14 ns
Setup time, data before CLK↑ 10 10 ns
Hold time, data after CLK↑ 0 0 ns
Operating free-air temperature –55 125 0 70 °C

†

electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)

SN54ALS534A SN74ALS534A

MIN TYP‡MAX MIN TYP‡MAX

V

IK

V

OH

I

OZH

I

OZL

I

I

I

IH

IL

I

O

I

CC

‡

All typical values are at VCC = 5 V, TA = 25°C.

§

The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

CLK, OE
D

§

VCC = 4.5 V, II = –18 mA –1.5 –1.5 V
VCC = 4.5 V to 5.5 V, IOH = –0.4 mA VCC –2 VCC –2

= 4.5

CC

= 4.5

CC

VCC = 5.5 V, VO = 2.7 V 20 20 µA
VCC = 5.5 V, VO = 0.4 V –20 –20 µA
VCC = 5.5 V, VI = 7 V 0.1 0.1 mA
VCC = 5.5 V, VI = 2.7 V 20 20 µA

= 5.5 V,

CC

VCC = 5.5 V, VO = 2.25 V –20 –112 –30 –112 mA

VCC = 5.5 V

IOH = –1 mA 2.4 3.3
IOH = –2.6 mA 2.4 3.2
IOL = 12 mA 0.25 0.4 0.25 0.4
IOL = 24 mA 0.35 0.5

= 0.4

I

Outputs high 11 19 11 19
Outputs low 19 28 19 28
Outputs disabled 10 31 20 31

–0.1 –0.1
–0.2 –0.2

V

mA

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3