5-1
FACT DATA
Octal D Type Flip Flop
With 3 State Outputs
The MC74AC534/74ACT534 is a high-speed, low-power octal D-type flip-flop
featuring separate D-type inputs for each flip-flop and 3-state outputs for bus
oriented applications. A buffered Clock (CP) and Output Enable (OE) are common
to all flip flops. The
′
AC/ACT534 is the same as the
′
AC/ACT374 except that the
outputs are inverted.
•
Edge-Triggered D-Type Inputs
•
Buffered Positive Edge-Triggered Clock
•
3-State Outputs for Bus Oriented Applications
19
20
18
17
16
15
14
2
1
3
4
5
6
7
VCC
13
8
12
9
11
10
O7
D6
O6
O5
D5
D4
O4
CP
OE
O0
D0
D1
O1
O2
D2
D3
O3
GND
D7
PIN NAMES
D0–D7
Data Inputs
CP
Clock Pulse Input
OE
3-State Output Enable Input
O0–O7
Complementary 3-State Outputs
MC74AC534
MC74ACT534
OCTAL D-TYPE
FLIP-FLOP WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
DW SUFFIX
CASE 751D-04
PLASTIC
11
1
3
4
7
8 13 14 17 18
2
5
6
9 12 15 16 19
LOGIC SYMBOL
D0 D1 D2 D3 D4 D5 D6 D7
CP
O1 O2 O3 O4 O5 O6 O7
OE
O0
MC74AC534 MC74ACT534
5-2
FACT DATA
FUNCTIONAL DESCRIPTION
The MC74AC534/74ACT534 consists of eight edge-triggered
flip-flops with individual D-type inputs and 3-state true outputs.
The buffered clock and buffered Output Enable are common
to all flip-flops. The eight flip-flops will store the state of their
individual D inputs that meet the setup and hold times
requirements on the LOW-to-HIGH Clock (CP) transition. With
the Output Enable (OE) LOW, the contents of the eight
flip-flops are available at the outputs. When the OE is HIGH,
the outputs go to the high impedance state. Operation of the
OE input does not affect the state of the flip-flops.
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
O0
O1
O2
O3
O4
O5
O6
O7
OE
CP
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage (Referenced to GND)
–0.5 to +7.0
V
Vin
DC Input Voltage (Referenced to GND)
–0.5 to VCC +0.5
V
Vout
DC Output Voltage (Referenced to GND)
–0.5 to VCC +0.5
V
Iin
DC Input Current, per Pin
±
20
mA
Iout
DC Output Sink/Source Current, per Pin
±
50
mA
ICC
DC VCC or GND Current per Output Pin
±
50
mA
Tstg
Storage Temperature
–65 to +150
°
C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
′
AC
2.0
5.0
6.0
V
VCC
Supply Voltage
′
ACT
4.5
5.0
5.5
V
Vin, Vout
DC Input Voltage, Output Voltage (Ref. to GND)
0
VCC
V
tr, tf
Input Rise and Fall Time (Note 1)
′
AC Devices except Schmitt Inputs
VCC @ 3.0 V
150
tr, tf
Input Rise and Fall Time (Note 1)
′
AC Devices except Schmitt Inputs
VCC @ 4.5 V
40
ns/V
r, tf
′
AC Devices except Schmitt Inputs
VCC @ 5.5 V
25
tr, tf
Input Rise and Fall Time (Note 2)
′
ACT Devices except Schmitt Inputs
VCC @ 4.5 V
10
ns/V
tr, tf
Input Rise and Fall Time (Note 2)
′
ACT Devices except Schmitt Inputs
VCC @ 5.5 V
8.0
ns/V
TJ
Junction Temperature (PDIP)
140
°
C
TA
Operating Ambient Temperature Range
–40
25
85
°
C
IOH
Output Current — High
–24
mA
IOL
Output Current — Low
24
mA
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
MC74AC534 MC74ACT534
5-7
FACT DATA
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC DIP PACKAGE
CASE 738–03
ISSUE E
DW SUFFIX
PLASTIC SOIC PACKAGE
CASE 751D–04
ISSUE E
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.150
(0.006) PER SIDE.
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
–A–
–B–
20
1
11
10
S
A
M
0.010 (0.25)
B
S
T
D
20X
M
B
M
0.010 (0.25)
P
10X
J
F