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SN54F534A, SN74F534A
OCTAL EDGE TRIGGERED D TYPE FLIP FLOPS
WITH 3 STATE OUTPUTS
•
•
•
3-State Bus-Driving Inverting Outputs
Buffered Control Inputs
Package Options Incude Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
SN54F534A . . . J PACKAGE
SN74F534A . . . DW OR N PACKAGE
(TOP VIEW)
SDFS028A − D2932, MARCH 1987 − REVISED OCTOBER 1993
description
These 8-bit flip-flops feature 3-state outputs
designed specifically for driving highly capacitive
or relatively low-impedance loads. They are
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The eight flip-flops of the
′F534A
are
edge-triggered D-type flip-flops. On the positive
transition of the clock, the Q outputs are set to the
complement of the logic states that were set up at
the data (D) inputs. The
′F534A
is equivalent to the
′F374
except for having inverted outputs.
A buffered output enable ( OE ) control input can
be used to place the 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 need for interface or pullup
components.
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
SN54F534A . . . FK PACKAGE
(TOP VIEW)
1D
1Q
OE
V
CC
2D
2Q
3Q
3D
4D
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
8Q
8D
7D
7Q
6Q
6D
The output enable (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 SN54F534A is characterized for operation over the full military temperature range of −55°C to 125°C. The
SN74F534A is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each flip-flop)
INPUTS
OE
L
L
L
H
CLK
↑
↑
L
X
D
H
L
X
X
OUTPUT
Q
L
H
Q0
Z
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.
Copyright
1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251−1443
•
DALLAS, TEXAS 75265
4Q
GND
CLK
5Q
5D
2−1
SDFS028A − D2932, MARCH 1987 − REVISED OCTOBER 1993
SN54F534A, SN74F534A
OCTAL EDGE TRIGGERED D TYPE FLIP FLOPS
WITH 3 STATE OUTPUTS
logic diagram (positive logic)
EN
C1
2
5
6
9
12
15
16
19
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
3D
C1
7
1D
6
3Q
2D
4
C1
1D
5
2Q
1D
OE
CLK
1
11
C1
3
1D
2
logic symbol
†
1
OE
CLK
11
1D
2D
3D
4D
5D
6D
7D
8D
3
4
7
8
13
14
17
18
1D
1Q
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
4D
C1
8
1D
9
4Q
C1
5D
13
1D
C1
14
6D
1D
12
5Q
15
6Q
C1
7D
17
1D
16
7Q
C1
8D
18
1D
19
8Q
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage range, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1.2 V to 7 V
Input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
20 mA
Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . . . −0.5 V to 5.5 V
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
CC
Current into any output in the low state: SN54F534A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
SN74F534A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
Operating free-air temperature range: SN54F534A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74F534A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
‡ 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.
NOTE 1: The input-voltage ratings may be exceeded provided the input-current ratings are observed.
2−2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
SN54F534A, SN74F534A
OCTAL EDGE TRIGGERED D TYPE FLIP FLOPS
WITH 3 STATE OUTPUTS
SDFS028A − D2932, MARCH 1987 − REVISED OCTOBER 1993
recommended operating conditions
SN54F534A
MIN
VCC
VIH
VIL
IIK
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature
− 55
4.5
2
0.8
− 18
−3
20
125
0
NOM
5
MAX
5.5
SN74F534A
MIN
4.5
2
0.8
− 18
−3
24
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V
VCC = 4.75 V,
VOL
IOZH
IOZL
II
IIH
IIL
IOS‡
VCC = 4.5 V
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
TEST CONDITIONS
II = − 18 mA
IOH = − 1 mA
IOH = − 3 mA
IOH = − 1 mA to − 3 mA
IOL = 20 mA
IOL = 24 mA
VO = 2.7 V
VO = 0.5 V
VI = 7 V
VI = 2.7 V
VI = 0.5 V
VO = 0
− 60
SN54F534A
MIN TYP†
MAX
− 1.2
2.5
2.4
3.4
3.3
0.3
0.5
0.35
50
−50
0.1
20
− 0.6
− 150
− 60
0.5
50
−50
0.1
20
− 0.6
− 150
86
V
µA
µA
mA
µA
mA
mA
mA
2.5
2.4
2.7
3.4
3.3
V
SN74F534A
MIN TYP†
MAX
− 1.2
UNIT
V
ICCZ
VCC = 5.5 V,
See Note 2
55
86
55
† All typical values are at VCC = 5 V, TA = 25°C.
‡ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 2: ICCZ is measured with OE at 4.5 V and all other inputs grounded.
timing requirements
VCC = 5 V,
TA = 25°C
′F534A
MIN
fclock
tw
tsu
th
Clock frequency
CLK high
Pulse duration
Setup time before CLK↑
Hold time after CLK↑
CLK low
Data high
Data low
Data high
Data low
0
7
6
2
2
2
2
MAX
100
VCC = 4.5 V to 5.5 V,
TA = MIN to MAX§
SN54F534A
MIN
0
7
6
2.5
2.5
2
2.5
MAX
60
SN74F534A
MIN
0
7
6
2
2
2
2
ns
ns
ns
MAX
70
MHz
UNIT
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
2−3
SDFS028A − D2932, MARCH 1987 − REVISED OCTOBER 1993
SN54F534A, SN74F534A
OCTAL EDGE TRIGGERED D TYPE FLIP FLOPS
WITH 3 STATE OUTPUTS
switching characteristics (see Note 3)
VCC = 5 V,
CL = 50 pF,
RL = 500
Ω,
TA = 25°C
′F534A
MIN
fmax
tPLH
tPHL
tPZH
tPZL
tPHZ
100
3
CLK
OE
OE
Any Q
Any Q
Any Q
3
1.2
1.2
1.2
4.5
4.5
4.5
5
3.5
7
7
7.5
7.5
6.5
TYP
MAX
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
Ω,
TA = MIN to MAX †
SN54F534A
MIN
60
2.5
2.5
1.2
1.2
1.2
10.5
11
14
10
8
MAX
SN74F534A
MIN
70
2.5
2.5
1.2
1.2
1.2
7.5
7.5
8.5
8.5
7.5
6.5
ns
ns
ns
MAX
MHz
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
UNIT
tPLZ
1.2
3.5
5.5
1.2
7.5
1.2
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuits and waveforms are shown in Section 1.
2−4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
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