MC74ACT374 Datasheet PDF - Motorola


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MC74ACT374
Motorola

Part Number MC74ACT374
Description OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS
Page 7 Pages

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MC74AC374
MC74ACT374
Octal DĆType FlipĆFlop
with 3ĆState Outputs
The MC74AC374/74ACT374 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.
Buffered Positive Edge-Triggered Clock
3-State Outputs for Bus-Oriented Applications
Outputs Source/Sink 24 mA
See MC74AC273 for Reset Version
See MC74AC377 for Clock Enable Version
See MC74AC373 for Transparent Latch Version
See MC74AC574 for Broadside Pinout Version
See MC74AC564 for Broadside Pinout Version with Inverted Outputs
• ′ACT374 Has TTL Compatible Inputs
VCC O7 D7 D6 O6 O5 D5 D4 O4 CP
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
OE O0 D0 D1 O1 O2 D2 D3 O3 GND
PIN NAMES
D0–D7
CP
OE
O0–O7
Data Inputs
Clock Pulse Input
3-State Output Enable Input
3-State Outputs
TRUTH TABLE
Inputs
Dn CP
H
L
XX
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Transition
Outputs
OE On
LH
LL
HZ
OCTAL D-TYPE
FLIP-FLOP WITH
3-STATE OUTPUTS
N SUFFIX
CASE 738-03
PLASTIC
DW SUFFIX
CASE 751D-04
PLASTIC
LOGIC SYMBOL
D0 D1 D2 D3 D4 D5 D6 D7
CP
OE
O0 O1 O2 O3 O4 O5 O6 O7
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MC74AC374 MC74ACT374
FUNCTIONAL DESCRIPTION
The MC74AC374/74ACT374 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
time 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.
LOGIC DIAGRAM
D0 D1 D2 D3 D4 D5 D6 D7
CP
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
CP D
QQ
OE
O0 O1
O2 O3 O4 O5
O6 O7
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
Vin
Vout
Iin
Iout
ICC
Tstg
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC VCC or GND Current per Output Pin
Storage Temperature
–0.5 to +7.0
–0.5 to VCC +0.5
–0.5 to VCC +0.5
±20
±50
±50
–65 to +150
V
V
V
mA
mA
mA
°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
VCC
Supply Voltage
AC
ACT
2.0 5.0
4.5 5.0
Vin, Vout
tr, tf
DC Input Voltage, Output Voltage (Ref. to GND)
Input Rise and Fall Time (Note 1)
AC Devices except Schmitt Inputs
Input Rise and Fall Time (Note 2)
tr, tf ACT Devices except Schmitt Inputs
VCC @ 3.0 V
VCC @ 4.5 V
VCC @ 5.5 V
VCC @ 4.5 V
VCC @ 5.5 V
0
150
40
25
10
8.0
TJ Junction Temperature (PDIP)
TA Operating Ambient Temperature Range
IOH Output Current — High
IOL Output Current — Low
–40 25
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.
Max
6.0
5.5
VCC
140
85
–24
24
Unit
V
V
ns/V
ns/V
°C
°C
mA
mA
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MC74AC374 MC74ACT374
DC CHARACTERISTICS
Symbol
Parameter
VIH
VIL
VOH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
VCC
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
74AC
74AC
TA = +25°C
TA =
–40°C to +85°C
Typ Guaranteed Limits
1.5 2.1
2.25 3.15
2.75 3.85
2.1
3.15
3.85
1.5 0.9
2.25 1.35
2.75 1.65
0.9
1.35
1.65
2.99 2.9
4.49 4.4
5.49 5.4
2.9
4.4
5.4
VOL
Maximum Low Level
Output Voltage
3.0 2.56
4.5 3.86
5.5 4.86
3.0 0.002 0.1
4.5 0.001 0.1
5.5 0.001 0.1
2.46
3.76
4.76
0.1
0.1
0.1
IIN Maximum Input
Leakage Current
3.0 0.36 0.44
4.5 0.36 0.44
5.5 0.36 0.44
5.5 ±0.1 ±1.0
IOZ Maximum
3-State
Current
5.5 ±0.5 ±5.0
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5 75
5.5 –75
5.5 8.0 80
* All outputs loaded; thresholds on input associated with output under test.
† Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
Unit
V
V
V
V
V
V
µA
µA
mA
mA
µA
Conditions
VOUT = 0.1 V
or VCC – 0.1 V
VOUT = 0.1 V
or VCC – 0.1 V
IOUT = –50 µA
*VIN = VIL or VIH
–12 mA
IOH –24 mA
–24 mA
IOUT = 50 µA
*VIN = VIL or VIH
12 mA
IOL 24 mA
24 mA
VI = VCC, GND
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65 V Max
VOHD = 3.85 V Min
VIN = VCC or GND
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MC74AC374 MC74ACT374
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
fmax
tPLH
tPHL
tPZH
Maximum Clock
Frequency
Propagation Delay
CP to On
Propagation Delay
CP to On
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
3.3 60 110
5.0 100 155
3.3 3.0 11 13.5
5.0 2.5 8.0 9.5
3.3 2.5 10 12.5
5.0 2.0 7.0 9.0
3.3 3.0 9.5 11.5
5.0 2.0 7.0 8.5
3.3 2.5 9.0 11.5
5.0 2.0 6.5 8.5
3.3 3.0 10.5 12.5
5.0 2.0 8.0 11
3.3 2.0 8.0 11.5
5.0 1.5 6.5 8.5
74AC
TA = –40°C
to +85°C
CL = 50 pF
Min Max
60
100
1.5 15.5
1.5 10.5
2.0 14
1.5 10
1.5 13
1.0 9.5
1.5 13
1.0 9.5
2.0 14.5
2.0 12.5
1.0 12.5
1.0 10
Unit
MHz
ns
ns
ns
ns
ns
ns
Fig.
No.
3-3
3-6
3-6
3-7
3-8
3-7
3-8
AC OPERATING REQUIREMENTS
Symbol
Parameter
ts
Setup Time, HIGH or LOW
Dn to CP
th
Hold Time, HIGH or LOW
Dn to CP
tw
CP Pulse Width
HIGH or LOW
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
74AC
74AC
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ Guaranteed Minimum
3.3 2.0
5.0 1.0
3.3 –1.0
5.0 0
5.5
4.0
1.0
1.5
6.0 ns 3-9
4.5
1.0 ns 3-9
1.5
3.3 4.0
5.0 2.5
5.5
4.0
6.0 ns 3-6
4.5
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