TECHNICAL DATA
Octal d-type latch (3-state)
IN74VHCT373 is designed for using in up-to-date high
performance computers, high-level electronic equipment
for mass application.
IN74VHCT373 is identical in pinout to the ICs
IN74HC373A,
IN74HCT373A,
IN74AC373A,
IN74ACT373A.
Input voltage levels are compatible with standard TTL-
levels. Output voltage levels are compatible with input
levels of C-MOS, N-MOS and TTL ICs.
IN74VHCT373
ORDERING INFORMATION
IN74VHCT373N Plastic
IN74VHCT373DW SOIC
T
A
= -40° to 85° C for all packages
Features:
•
Supply voltage range 4.5 to 5.5 V.
•
Output current 8 mA.
•
Low consumption current: 0.2 mkA (typical value) at
Та
= 25
°С.
•
Latchup current not less than 300 mA at
Та
= 85
°С.
•
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 (ММ).
•
Ambient operation temperature minus 40 to plus 85
°С.
•
Balanced signal propagation delay.
•
Ensures voltage exceeding mode on input
.
1
IN74VHCT373
IN74VHCT373 truth table
Input
Output
D
H
L
X
X
Q
H
L
Qo
Z
OE
L
L
L
H
Note –
LE
H
H
L
X
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 state
Pins description in IN74VHCT373
Pinout
OE
Q0
D0
D1
Q1
Q2
D2
D3
Q3
01
02
03
04
05
06
07
08
09
20
19
18
17
16
15
14
13
12
11
Pin No.
01
Symbol
Description
Input OUTPUT ENABLE
Data output
Data input
Data input
Data output
Data output
Data input
Data input
Data output
Common output
Recording enable input
Data output
Data input
Data input
Data output
Data output
Data input
Data input
Data output
Supply output from voltage source
OE
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
LE
Q4
D4
D5
Q5
Q6
D6
D7
Q7
Vcc
V
CC
Q7
D7
D6
Q6
Q5
D5
D4
Q4
LE
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
GND
10
2
IN74VHCT373
Absolute maximum conditions*
Parameter, unit
Supply voltage, V
Input voltage, V
Output voltage, V
Output voltage, V
Input diode current, mA
Current of common output and supply
output, mA
Output current, mA
Output diode current, mA
Dissipated power, mW
Symbol
V
CC
Vin
Vout
Vout1
Iik
Icc
Iout
Iok
Pd
min
-0.5
-0.5
-0.5
-0.5
-
Value
max
7.0
7.0
V
CC
+ 0.5B
7.0
-20
±75
±25
±20
180
*Under absolute maximum conditions operation of microcircuit is not guaranteed. Operation is
guaranteed under maximum conditions
Maximum conditions
Parameter, unit
Symbol
Value
max
5.5
V
CC
V
CC
5.5*
±8.0
20
– outputs
min
Supply voltage, V
V
CC
4.5
Input voltage,V
Vin
0
Output voltage, V
Vout
0
Output voltage, V
Vout1
0
Output current, mA
Iout
-
Input rise and fall time, ns/V
t
LH
, t
HL
0
* - For ICs without third state on outputs – Vcc = 0V, for ICs with third state on outputs
should be in third state
3
IN74VHCT373
DC electrical characteristics
Value
Symbo
l
V
IH
V
IL
V
OH
Parameter
High input voltage
Test conditions
V
CC
,
V
25
°C
min
2.0
–
4.42
5.42
3.94
–
–
–
-
max
-
0.8
–
–
–
0.09
0.09
0.36
±0.25
±0.1
±0.1
4.0
1.35
–40
to 85
°C
min
max
2.0
-
–
4.4
5.4
3.80
–
–
–
-
0.8
–
–
–
0.1
0.1
0.44
±2.5
±1.0
±1.0
40.0
1.5
mA
Unit
V
OL
I
OZ
I
I
I
IH1
I
CC
I
CCT
4.5 –
V
O
≤
0.1 V or
5.5
V
O
≥
V
CC
–0.1
Low input voltage
4.5 –
V
O
≤
0.1 V or
5.5
V
O
≥
V
CC
–0.1
High output voltage V
I
= V
IH
or V
IL
4.5
I
O
= -50 mkA
5.5
V
I
= V
IH
or V
IL
;
4.5
I
O
= -8 mA
Low output voltage V
I
= V
IH
or V
IL
4.5
I
O
= 50 mkA
5.5
V
I
= V
IH
or V
IL
4.5
I
O
= 8 mA
5.5
Output current in V
I
= 2.0V
"off" state
V
O
= V
CC
or 0V
Input current
V
I
= 0 V or V
CC
5.5
High level input V
I
= 5.5V
0
current
Consumption current V
I
=V
CC
or 0V 5.5
TTL-input
V
I
consumption current
=
3.4
V
5.5
V
-
-
-
-
-
-
uA
4
IN74VHCT373
AC electrical characteristics
(t
LH
= t
HL
= 3.0 ns, R
L
= 1 kOhm)
Value
Symbol
Parameter
Test conditions
V
CC
, V
C
L
,
pF
25
°C
min
–
–
–
–
–
max
12.3
13.3
8.5
9.5
11.2
–40
to 85
°C
min max
–
13.5
–
14.5
–
–
–
9.5
10.5
12.0
Unit
ns
t
PHL
, t
PLH
Propagation delay time Fig 1
when switching «on»,
«off» from input LE to
output Q
t
PHL
, t
PLH
From input D to output Q Fig 1
t
PHZ
, t
PLZ
Propagation delay time Fig 2
under transition from
high, low level into «off»
state
t
PZH
, t
PZL
Propagation delay time Fig 2
under transition from
«off» state into high, low
level
t
SU
Time of setting signal D Fig 3
relativey to LE
t
H
Retention time, D signal Fig 3
to LE
t
W
Pulse duration of LE Fig 3
signal
t
OSLH
, Propagation
delays
t
OSHL
difference
between
outputs
5.0 ± 0.5 15
50
5.0 ± 0.5 15
50
5.0 ± 0.5 50
ns
ns
5.0 ± 0.5 15
50
5.0 ± 0.5 15
50
5.0 ± 0.5 15
50
5.0 ± 0.5 15
50
5.5 ± 0.5 50
–
–
1.5
1.5
3.5
3.5
6.5
6.5
–
10.9
11.9
–
–
–
–
–
–
1.0
–
–
1.5
1.5
3.5
3.5
8.5
8.5
–
12.5
13.5
–
–
–
–
–
–
1.0
ns
ns
–
Capacitance characteristics
Symbol
C
I
C
O
C
РD
Parameter
Input capacity
Output capacity
Dynamic capacity
Test conditions
-
-
V
I
= 0 V orV
CC
V
CC
, V
5.0
5.0
5.0
Value
25
°C
min
max
10
12
50
Unit
pF
pF
pF
5
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