SN54BCT534, SN74BCT534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS033B AUGUST 1989 REVISED NOVEMBER 1993
Copyright
1993, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art BiCMOS Design
Significantly Reduces I
CCZ
Full Parallel Access for Loading
Buffered Control Inputs
3-State Bus-Driving Inverted Outputs
ESD Protection Exceeds 2000 V
Per MIL-STD-883C, Method 3015
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Plastic and Ceramic 300-mil DIPs (J, N)
description
The
BCT534 is an 8-bit flip-flop with 3-state
outputs designed specifically for driving highly
capacitive or relatively low-impedance loads. It is
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The eight flip-flops of the
BCT534 are
edge-triggered D-type flip-flops. On the positive
transition of the clock, the Q outputs will be set to
the complement of the logic levels that were set up
at the data (D) inputs. The
BCT534 provides
inverted data at its outputs.
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low logic levels) or a high-imped-
ance state. In the high-impedance state, the
outputs neither load nor drive the bus lines
significantly. The high-impedance state and the
increased drive provide the capability to drive bus
lines without need for interface or pullup
components.
The output-enable (OE) input does not affect the internal operations of the flip-flop. Previously stored data can
be retained or new data can be entered while the outputs are in the high-impedance state.
The SN54BCT534 is characterized for operation over the full military temperature range of 55
C to 125
C. The
SN74BCT534 is characterized for operation from 0
C to 70
C.
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUT
OE
CLK
D
Q
L
H
L
L
L
H
L
H or L
X
Q0
H
X
X
Z
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLK
SN54BCT534 . . . J OR W PACKAGE
SN74BCT534 . . . DW OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
8D
7D
7Q
6Q
6D
2D
2Q
3Q
3D
4D
SN54BCT534 . . . FK PACKAGE
(TOP VIEW)
1D
1Q
OE
5Q
5D
8Q
4Q
GND
CLK
V
CC
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.
SN54BCT534, SN74BCT534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS033B AUGUST 1989 REVISED NOVEMBER 1993
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbol
logic diagram (positive logic)
1D
3
1D
4
2D
7
3D
8
4D
13
5D
14
6D
17
7D
18
8D
2
5
6
9
12
15
16
19
EN
1
C1
11
CLK
OE
1Q
2Q
3Q
4Q
5Q
6Q
8Q
7Q
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
15
1D
C1
C1
C1
C1
C1
C1
C1
C1
1D
1D
1D
1D
1D
1D
1D
OE
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
11
3
4
7
8
13
14
17
18
1
2
5
6
9
12
16
19
CLK
SN54BCT534, SN74BCT534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS033B AUGUST 1989 REVISED NOVEMBER 1993
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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, V
I
(see Note 1)
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state, V
O
0.5 V to 5.5 V
. . . . . . . . . . . . . . .
Voltage range applied to any output in the high state, V
O
0.5 V to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current
30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54BCT534
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT534
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range:
SN54BCT534
55
C to 125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT534 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 and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
SN54BCT534
SN74BCT534
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IIK
Input clamp current
18
18
mA
IOH
High-level output current
12
15
mA
IOL
Low-level output current
48
64
mA
TA
Operating free-air temperature
55
125
0
70
C
SN54BCT534, SN74BCT534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS033B AUGUST 1989 REVISED NOVEMBER 1993
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54BCT534
SN74BCT534
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
1.2
V
IOH = 3 mA
2.4
3.3
2.4
3.4
VOH
VCC = 4.5 V
IOH = 12 mA
2
3.2
V
IOH = 15 mA
2
3.1
VOL
VCC = 4 5 V
IOL = 48 mA
0.38
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.42
0.55
V
II
VCC = 5.5 V,
VI = 5.5 V
0.4
0.4
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
A
IIL
VCC = 5.5 V,
VI = 0.5 V
0.6
0.6
mA
IOS
VCC = 5.5 V,
VO = 0
100
225
100
225
mA
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
50
A
IOZL
VCC = 5.5 V,
VO = 0.5 V
50
50
A
ICCL
VCC = 5.5 V,
VO = Open
38
55
38
55
mA
ICCH
VCC = 5.5 V,
VO = Open
5
8
5
8
mA
ICCZ
VCC = 5.5 V,
VO = Open
4.5
7
4.5
7
mA
Ci
VCC = 5 V,
VI = VCC or GND
6
6
pF
Co
VCC = 5 V,
VO = VCC or GND
10
10
pF
All typical values are at VCC = 5 V, TA = 25
C.
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
VCC = 5 V,
TA = 25
C
SN54BCT534
SN74BCT534
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
fclock
Clock frequency
0
77
0
70
0
77
MHz
t
Pulse duration
CLK high
6
6
6
ns
tw
Pulse duration
CLK low
7
7
7
ns
t
Setup time before CLK
Data high
6
6
6
ns
tsu
Setup time before CLK
Data low
9.5
9.5
9.5
ns
th
Hold time after CLK
Data high
0
0
0
ns
th
Hold time after CLK
Data low
1
1
1
ns
SN54BCT534, SN74BCT534
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS033B AUGUST 1989 REVISED NOVEMBER 1993
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics (see Note 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = 25
C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
UNIT
BCT534
SN54BCT534
SN74BCT534
MIN
TYP
MAX
MIN
MAX
MIN
MAX
fmax
77
70
77
MHz
tPLH
CLK
Q
3.3
6.7
9.6
3.3
12.8
3.3
11.4
ns
tPHL
CLK
Q
3.5
6.2
8.8
3.5
11
3.5
10
ns
tPZH
OE
Q
3.9
7.6
10.3
3.9
13.1
3.9
12.5
ns
tPZL
OE
Q
4.6
8.2
11.1
4.6
13.7
4.6
13.3
ns
tPHZ
OE
Q
2.6
4.7
6.7
2.6
8
2.6
7.4
ns
tPLZ
OE
Q
1.8
4.1
6.1
1.8
7.8
1.8
6.9
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
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Copyright
1998, Texas Instruments Incorporated
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