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SN54HC534, SN74HC534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS311A – JANUARY 1996 – REVISED MAY 1997
D
D
High-Current 3-State Inverting Outputs Can
Drive up to 15 LSTTL Loads
Package Options Include Plastic
Small-Outline (DW) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
SN54HC534 . . . J OR W PACKAGE
SN74HC534 . . . DW OR N PACKAGE
(TOP VIEW)
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 ’HC534 are
edge-triggered D-type flip-flops. On the positive
transition of the clock (CLK) input, the Q outputs
are set to the complement of the logic states that
were set up at the data (D) inputs. The ’HC534 are
functionally equivalent to the ’HC374, but the
’HC534 have inverted outputs.
An output-enable (OE) input places the eight
outputs in either a normal logic state (high or low
logic levels) or the 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.
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
SN54HC534 . . . 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
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 SN54HC534 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74HC534 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each flip-flop)
INPUTS
OE
L
L
L
H
CLK
↑
↑
H or L
X
D
H
L
X
X
OUTPUT
Q
L
H
Q0
Z
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.
Copyright
©
1997, Texas Instruments Incorporated
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.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
4Q
GND
CLK
5Q
5D
1
SN54HC534, SN74HC534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS311A – JANUARY 1996 – REVISED MAY 1997
logic symbol
†
1
OE
CLK
1D
2D
3D
4D
5D
6D
7D
8D
11
3
4
7
8
13
14
17
18
EN
C1
1D
2
5
6
9
12
15
16
19
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
OE
1
CLK
11
C1
2
1D
3
1D
1Q
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range
‡
Supply voltage range, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20
mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20
mA
Continuous output current, I
O
(V
O
= 0 to V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±35
mA
Continuous current through V
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±70
mA
Package thermal impedance,
θ
JA
(see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
SN54HC534, SN74HC534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS311A – JANUARY 1996 – REVISED MAY 1997
recommended operating conditions
SN54HC534
MIN
VCC
VIH
Supply voltage
High-level input voltage
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 2 V
VIL
VI
VO
tt
TA
Low-level input voltage
Input voltage
Output voltage
Input transition (rise and fall) time
Operating free-air temperature
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 4.5 V
VCC = 6 V
2
1.5
3.15
4.2
0
0
0
0
0
0
0
0
–55
0.5
1.35
1.8
VCC
VCC
1000
500
400
125
NOM
5
MAX
6
SN74HC534
MIN
2
1.5
3.15
4.2
0
0
0
0
0
0
0
0
–40
0.5
1.35
1.8
VCC
VCC
1000
500
400
85
°C
ns
V
V
V
V
NOM
5
MAX
6
UNIT
V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
2V
IOH = –20
µA
VOH
VI = VIH or VIL
IOH = –6 mA
IOH = –7.8 mA
IOL = 20
µA
VOL
VI = VIH or VIL
IOL = 6 mA
IOL = 7.8 mA
II
IOZ
ICC
Ci
VI = VCC or 0
VO = VCC or 0,
VI = VCC or 0,
VI = VIH or VIL
IO = 0
4.5 V
6V
4.5 V
6V
2V
4.5 V
6V
4.5 V
6V
6V
6V
6V
2 V to 6 V
3
TA = 25°C
MIN
TYP
MAX
1.9
4.4
5.9
3.98
5.48
1.998
4.499
5.999
4.3
5.8
0.002
0.001
0.001
0.17
0.15
±0.1
±0.01
0.1
0.1
0.1
0.26
0.26
±100
±0.5
8
10
SN54HC534
MIN
1.9
4.4
5.9
3.7
5.2
0.1
0.1
0.1
0.4
0.4
±1000
±10
160
10
MAX
SN74HC534
MIN
1.9
4.4
5.9
3.84
5.34
0.1
0.1
0.1
0.33
0.33
±1000
±5
80
10
nA
µA
µA
pF
V
V
MAX
UNIT
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
SN54HC534, SN74HC534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS311A – JANUARY 1996 – REVISED MAY 1997
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
2V
fclock
Clock frequency
4.5 V
6V
2V
tw
Pulse duration, CLK high or low
4.5 V
6V
2V
tsu
Setup time, data before CLK↑
↑
4.5 V
6V
2V
th
Hold time, data after CLK↑
↑
4.5 V
6V
TA = 25°C
MIN
MAX
0
0
0
80
16
14
100
20
17
5
5
5
6
31
36
SN54HC534
MIN
0
0
0
120
24
20
150
30
26
5
5
5
MAX
4.2
21
25
SN74HC534
MIN
0
0
0
100
20
17
125
25
21
5
5
5
ns
ns
ns
MAX
5
25
29
MHz
UNIT
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
2V
fmax
4.5 V
6V
2V
tpd
CLK
Any Q
4.5 V
6V
2V
ten
OE
Any Q
4.5 V
6V
2V
tdis
OE
Any Q
4.5 V
6V
2V
tt
Any Q
4.5 V
6V
TA = 25°C
MIN
TYP
MAX
6
31
36
11
36
40
88
28
24
77
26
23
51
25
23
28
8
6
180
36
31
150
30
26
150
30
26
60
12
10
SN54HC534
MIN
4.2
21
25
270
54
46
225
45
38
225
45
38
90
18
15
MAX
SN74HC534
MIN
5
25
29
225
45
38
190
38
32
190
38
32
75
15
13
ns
ns
ns
ns
MHz
MAX
UNIT
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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