TECHNICAL DATA
IN74VHC74
D
UAL
D
F
LIP
-F
LOP WITH
S
ET AND
R
ESET
IN74VHC74 is high-speed logic IC made by CMOS
technology and designed for use in high-performance
calculating systems with a wide supply voltage range.
As for operation speed, IN74VHC74 can be compared
with equivalent bipolar ICs based on Schottky TTL and two
times surpasses ICs of IN74 series.
IN74VHC74 tolerates operation under conditions when
voltage on input is exceeded up to 7V without affecting
characteristics and IC reliability. This possibility allows to
use IN74VHC74 in radio-electronic devices for interfacing
with supply voltages 5V and 3V, eliminate IC failure under
supply voltage source emergency outage.
Use of output edge shaping block in the microcircuit
allows to reduce noise amplitude of noises when switching
outputs into the same state simultaneously.
Input and output levels of IN74VHC74 are compatible with
CMOS levels
ORDERING INFORMATION
IN74VHC74N Plastic
IN74VHC74D SOIC
T
A
= -40
to 85 C for all
packages
Features:
Supply voltage range 2.0 to 5.5 V.
Output current 8 mA.
Low consumption current: 0.2 mkA (typical value) at = 25
.
Latchup current not less than 300 mA at = 85
.
Tolerable value of static potential not less than 2000 V as per human body model (HBM) and not
less than 200 V as per machine model ().
Ambient operation temperature minus 40 to plus 85
.
Balanced signal propagation delay.
Ensures voltage exceeding mode on input
Low noise level at the simultaneous switching of outputs in the same state: V
OLP
= 0.8 V (max).
For pins and functions, compatible with IN74HC74.
.
.
1
IN74VHC74
IN74VHC74 truth table
Input Output
nSD
nRD
nCP nD nQ
nQ
L H X X H L
H L X X L H
L L X X H H
H H
H H L
H H
L L H
H H L X Qo Qo
H H H X Qo Qo
H H
X Qo Qo
Note - H - high voltage level;
L - low voltage level;
X - any voltage level (low or high);
Qo - storage of the previous state;
Z - output in the third
- transition from low into high level;
- transition from high into low level
Pinout
Pins description in IN74VHC74
Pin No.
Symbol
Description
01
1RD
Input of RESET signal
02
1D Data
input
03
1CP
Input of clock signal
04
1SD
Input of SET signal
05
1Q Data
output
06
1Q
Data output
07
GND Common
output
08
2Q
Data output
09
2Q Data
output
10
2SD
Input of SET signal
11 2CP
Input of clock signal
12 2D
Data input
13
2RD
Input of RESET signal
1RD
01
1D
02
1CP
03
1SD
04
1Q
05
1Q
06
07
GND
14
13
12
11
10
09
08
2D
2P
2SD
2Q
2Q
2RD
Vcc
14 V
CC
Supply output from voltage
source
2
IN74VHC74
Absolute maximum conditions*
Parameter, unit
Symbol
Value
min
max
Supply voltage, V
V
CC
-0.5 7.0
Input voltage, V
Vin
-0.5
7.0
Output voltage, V
Vout
-0.5
Vcc+0.5V
Input diode current, mA
Iik
-
-20
Current of common output and supply
output, mA
Icc -
50
Output current, mA
Iout
-
25
Output diode current, mA
Iok
-
20
Dissipated power, mW
Pd
-
180
*Under absolute maximum conditions operation of microcircuit is not guaranteed. Operation is
guaranteed under maximum conditions
Maximum conditions
Symbol Value
Parameter, unit
min
max
Supply voltage, V
V
CC
2.0 5.5
Input voltage,V
Vin
0
V
CC
Output voltage, V
Vout
0
V
CC
Output current, mA
Iout
-
8.0
Input rise and fall time, ns/V
at Vcc = (3.3 0.3) V
at Vcc = (5.0 0.5) V
t
LH
, t
HL
0
0
100
20
3
IN74VHC74
AC electrical characteristics (t
LH
= t
HL
= 3.0 ns)
Value
25
C
-40
to 85
C
Symbol Parameter
Test conditions
V
CC
, V
C
L
,
pF
min
max min max
Unit
15
- 11.9 - 14.0
t
PHL
,
t
PLH
Propagation delay time
when switching "on",
"off" from input to
outputs Q,
Q
V
IL
= 0 V,
V
I
= Vcc
,
3.3 0.3
50
- 15.4 - 17.5
ns
15
- 7.3 - 8.5
t
PHL
,
t
PLH
Propagation delay time
when switching "on",
"off" from input to
outputs Q,
Q
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
50
- 8.3 - 10.5
ns
15
- 12.3 - 14.5
t
PHL
,
t
PLH
Propagation delay time
when switching "on",
"off" from inputs
SD
,
RD
to outputs Q,
Q
V
IL
= 0 V,
V
I
= Vcc
,
3.3 0.3
50
- 15.8 - 18.0
ns
15
- 7.7 - 9.0
t
PHL
,
t
PLH
Propagation delay time
when switching "on",
"off" from inputs
SD
,
RD
to outputs Q,
Q
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
50
- 9.7 - 11.0
ns
15
- 80 - 70
f
max
Maximum Clock
Frequency
V
IL
= 0 V,
V
I
=Vcc
,
3.3 0.5
50
- 50 - 45
MHz
15
- 130 - 110
f
max
Maximum Clock
Frequency
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
50
- 90 - 75
MHz
3.3 0.3
6.0
- 7.0 -
t
SU
Time of setting signal D
to CP
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
15 -
50
5.0
- 5.0 -
3.0 0.3
0.5
- 0.5 -
t
H
Retention time, D signal
to CP
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
15 -
50
0.5
- 0.5 -
ns
3.0 0.3
5.0
- 5.0 -
t
REM
Time of recovery of
signal after signals
SD
,
RD
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
15 -
50
3.0
- 3.0 -
3.0 0.3
6.0
- 7.0 -
t
W
Pulse duration of CP,
SD
,
RD
signals
V
IL
= 0 V,
V
I
=Vcc
,
5.0 0.5
15 -
50
5.0
- 6.0 -
C
I
Input capacity
5.0
10
pF
C
D
Dynamic capacity
V
I
= 0 V orV
CC
5.0 50
5
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