TECHNICAL DATA
IN74VHC373
Octal d-type latch with three state outputs
IN74VHC373 integrated circuits are designed for using in
up-to-date high-performance computers, high-level
electronic equipment for consumer application.
IN74VHC373 is identical in pinout to the IC series
IN74HC373A, IN74HCT373A, IN74AC373A,
IN74ACT373A.
Input voltage levels are compatible with standard C-MOS
levels.
Output voltage levels are compatible with input levels of
C-MOS, N-MOS and TTL ICs.
ORDERING INFORMATION
IN74VHC373N Plastic
IN74VHC373DW SOIC
T
A
= -40
to 85 C for all packages
Features:
Supply voltage 2.0 - 5.5 V.
Low input current: 1.0 mkA; 0.1 mkA at = 25
.
Output current 8 mA.
Latchup current not less than 300 mA at = 85
.
Tolerable value of static potential not less than 2000V as per human body model
(HBM) and not less than 200V as per machine model ().
.
1
IN74VHC373
IN74VHC373 truth table
Input Output
G
A Y
L L L
L H H
H X Z
Note -
H - high voltage level;
L - low voltage level;
X - any voltage level (low or high);
Z - output in third state
Pins description in IN74VHC373
Pin No.
Symbol
Description
01
OE
Input OUTPUT ENABLE
02 Q0
Data
output
03 D0
Data
input
04 D1
Data
input
05 Q1
Data
output
06 Q2
Data
output
07 D2
Data
input
08 D3
Data
input
09 Q3
Data
output
10 GND
Common
output
11
LE
Recording enable input
12 Q4
Data
output
13 D4
Data
input
14 D5
Data
input
15 Q5
Data
output
16 Q6
Data
output
17 D6
Data
input
18 D7
Data
input
19 Q7
Data
output
Pinout
01
Q0
02
D0
03
04
05
06
07
08
09
GND
10
20
19
18
17
16
15
14
13
12
11
V
CC
D1
Q1
Q2
D2
D3
Q3
D7
D6
Q6
Q5
D5
D4
Q4
LE
OE
Q7
20
Vcc
Supply output from voltage source
2
IN74VHC373
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 -
75
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
IN74VHC373
DC electrical characteristics
Value
25
C
-40
to 85
C
Symbo
l
Parameter Test
conditions
V
CC
,
V
min max
min max
Unit
2.0
1.5 - 1.5 - V
V
IH
High input voltage
-
3.0-5.5 0.7Vcc
- 0.7Vcc -
2.0
- 0.5 - 0.5
V
IL
Low input voltage
-
3.0-5.5
- 0.3Vcc
- 0.3Vcc
2.0 1.92
- 1.9 -
3.0 2.92
- 2.9 -
4.5 4.42
- 4.4 -
V
I
= V
IH
or V
IL
I
O
= -50 mkA
5.5 5.52
- 5.4 -
V
I
= V
IH
or V
IL
;
I
O
= -4 mA
3.0 2.58
- 2.48 -
V
OH
High output voltage
V
I
= V
IH
or V
IL
;
I
O
= -8 mA
4.5 3.94
- 3.80 -
2.0 - 0.09
- 0.1
3.0 - 0.09
- 0.1
4.5 - 0.09
- 0.1
V
I
= V
IH
orV
IL
I
O
= 50 mkA
5.5 - 0.09
- 0.1
V
I
= V
IH
or V
IL
I
O
= 4 mA
3.0 - 0.36
- 0.44
V
OL
Low output voltage
V
I
= V
IH
or V
IL
I
O
= 8 mA
4.5 - 0.36
- 0.44
I
OZ
Output current in
"off" state
V
I
= V
IH
or V
IL
V
O
= V
CC
or 0V
5.5 -
0.25
-
2.5
uA
I
I
Input current
V
I
= 5.5V or 0V
0 - 5.5
-
0.1
-
1.0
I
CC
Consumption current V
I
=V
CC
or 0V
5.5 - 4.0 - 40.0
Noise characteristics (C
L
= 50 pF)
Value
Symbol
Parameter
V
CC
, V
min max
Unit
V
OLP
Positive noise of low output voltage
5.0
-
0.9
V
V
OLV
Negative noise of low output
voltage
5.0 -0.9 -
V
IHD
Input dynamic high voltage
5.0
3.5
-
V
ILD
Input dynamic low voltage
5.0
-
1.5
4
IN74VHC373
AC electrical characteristics (t
LH
= t
HL
= 3.0 ns, R
L
= 1 kOhm)
Value
25
C
-40
C to
85
C
Symbol Parameter
Test
conditi
ons
V
CC
, V
C
L
,
pF
min max min max
Unit
15
- 11.0
- 13.0
3.3 0.3
50
- 14.5
- 16.5
15
- 7.2
- 8.5
t
PHL
,
t
PLH
Popagation delay time
when switching on,
off from input LE to
output Q
Fig. 1
5.0 0.5
50
- 9.2
- 10.5
ns
15
- 11.4
- 13.5
3.3 0.3
50
- 14.9
- 17.0
15
- 7.2
- 8.5
From input D to output Q
5.0 0.5
50
- 9.2
- 10.5
3.3 0.3
50
-
13.2
-
15.0
t
PHZ
, t
PLZ
Propagation delay time
under transition from
high, low level into off
state
Fig.2
5.0 0.5
50
-
9.2
-
10.5
15
- 11.4
- 13.5
3.3 0.3
50
- 14.9
- 17.0
15
- 8.1
- 9.5
t
PZH
, t
PZL
Propagation delay time
under transition from
off state into high, low
level
Fig.2
5.0 0.5
50
- 10.1
- 11.5
15
4.0
- 4.0 -
3.3 0.3
50
4.0
- 4.0 -
15
4.0
- 4.0 -
t
SU
Time of setting signal D
relativey to LE
Fig.3
5.0 0.5
50
4.0
- 4.0 -
15
1.0
- 1.0 -
3.3 0.3
50
1.0
- 1.0 -
15
1.0
- 1.0 -
t
H
Retention time, D signal
to LE
Fig.3
5.0 0.5
50
1.0
- 1.0 -
15
5.0
- 5.0 -
3.3 0.3
50
5.0
- 5.0 -
15
5.0
- 5.0 -
t
W
Pulse duration of LE
signal
Fig.3
5.0 0.5
50
5.0
- 5.0 -
-
3.3 0.3
50
-
1.5
-
1.5
t
OSLH
, t
OSHL
Propagation delays
difference between
outputs
5.5 0.5
50
-
1.0
-
1.0
Capacitance characteristics
Value
25
C
Symbol Parameter
Test conditions
V
CC
, V
min max
Unit
C
I
Input capacity
-
5.0
10
pF
C
O
Output capacity
-
5.0
12
pF
C
D
Dynamic capacity
V
I
= 0 V orV
CC
5.0 54 pF
5
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