74VHC32 Quad 2-Input OR Gate
November 1992
Revised March 1999
74VHC32
Quad 2-Input OR Gate
General Description
The VHC32 is an advanced high speed CMOS 2-Input OR
Gate fabricated with silicon gate CMOS technology. It
achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low
power dissipation.
The internal circuit is composed of 4 stages including buffer
output, which provide high noise immunity and stable out-
put. An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s
High Speed:
t
PD
=
3.8 ns (typ) at V
CC
=
5V
s
Low Power Dissipation:
I
CC
=
2
µA
(Max) at T
A
=
25°C
s
High Noise Immunity: V
NIH
=
V
NIL
=
28% V
CC
(Min)
s
Power down protection is provided on all inputs
s
Low Noise: V
OLP
=
0.8V (Max)
s
Pin and Function Compatible with 74HC32
Ordering Code:
Order Number
74VHC32M
74VHC32SJ
74VHC32MTC
74VHC32N
Package Number
M14A
M14D
MTC14
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Connection Diagram
Pin Descriptions
Pin Names
A
n
, B
n
O
n
Description
Inputs
Outputs
Truth Table
A
H
L
H
L
B
H
H
L
L
O
H
H
H
L
© 1999 Fairchild Semiconductor Corporation
DS011518.prf
www.fairchildsemi.com
74VHC32
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Input Voltage (V
IN
)
DC Output Voltage (V
OUT
)
Input Diode Current (I
IK
)
Output Diode Current (I
OK
)
DC Output Current (I
OUT
)
DC V
CC
/GND Current (I
CC
)
Storage Temperature (T
STG
)
Lead Temperature (T
L
)
(Soldering, 10 seconds)
260°C
−0.5V
to
+7.0V
−0.5V
to
+7.0V
−0.5V
to V
CC
+
0.5V
−20
mA
±20
mA
±25
mA
±50
mA
−65°C
to
+150°C
Recommended Operating
Conditions
(Note 2)
Supply Voltage (V
CC
)
Input Voltage (V
IN
)
Output Voltage (V
OUT
)
Operating Temperature (T
OPR
)
Input Rise and Fall Time (t
r
, t
f
)
V
CC
=
3.3V
±0.3V
V
CC
=
5.0V
±0.5V
0
∼
100 ns/V
0
∼
20 ns/V
2.0V to
+5.5V
0V to
+5.5V
0V to V
CC
−40°C
to
+85°C
Note 1:
Absolute Maximum Ratings are values beyond which the device
may be damaged or have its useful life impaired. The databook specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommend operation outside databook specifica-
tions.
Note 2:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
OH
Parameter
HIGH Level
Input Voltage
LOW Level
Input Voltage
HIGH Level
Output Voltage
V
CC
(V)
2.0
3.0
−
5.5
2.0
3.0
−
5.5
2.0
3.0
4.5
3.0
4.5
V
OL
LOW Level
Output Voltage
2.0
3.0
4.5
3.0
4.5
I
IN
I
CC
Input Leakage
Current
Quiescent Supply Current
5.5
2.0
20.0
µA
V
IN
=
V
CC
or GND
0
−
5.5
1.9
2.9
4.4
2.58
3.94
0.0
0.0
0.0
0.1
0.1
0.1
0.36
0.36
±0.1
2.0
3.0
4.5
T
A
=
25°C
Min
1.50
0.7 V
CC
0.50
0.3 V
CC
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
±1.0
V
µA
I
OL
=
4 mA
I
OL
=
8 mA
V
IN
=
5.5V or GND
V
V
I
OH
= −4
mA
I
OH
= −8
mA
V
IN
=
V
IH
I
OL
=
50
µA
or V
IL
V
Typ
Max
T
A
= −40°C
to
+85°C
Min
1.50
0.7 V
CC
0.50
0.3 V
CC
Max
Units
V
V
V
IN
=
V
IH
I
OH
= −50 µA
or V
IL
Conditions
Noise Characteristics
Symbol
V
OLP
(Note 3)
V
OLV
(Note 3)
V
IHD
(Note 3)
V
ILD
(Note 3)
Parameter
Quiet Output Maximum
Dynamic V
OL
Quiet Output Minimum
Dynamic V
OL
Minimum HIGH Level
Dynamic Input Voltage
Maximum LOW Level
Dynamic Input Voltage
5.0
1.5
V
C
L
=
50 pF
5.0
3.5
V
C
L
=
50 pF
5.0
−0.3
−0.8
V
C
L
=
50 pF
V
CC
(V)
5.0
T
A
=
25°C
Typ
0.3
Limit
0.8
Units
V
C
L
=
50 pF
Conditions
Note 3:
Parameter guaranteed by design.
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2
74VHC32
AC Electrical Characteristics
Symbol
t
PHL
t
PLH
Parameter
Propagation Delay
V
CC
(V)
3.3
±0.3
5.0
±0.5
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance
Note 4:
C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average
operating current can be obtained by the equation: I
CC
(opr.)
=
C
PD
* V
CC
* f
IN
+
I
CC
/4 (per gate).
T
A
=
25°C
Min
Typ
5.5
8.0
3.8
5.3
4
14
Max
7.9
11.4
5.5
7.5
10
T
A
= −40°C
to
+85°C
Min
1.0
1.0
1.0
1.0
Max
9.5
13.0
6.5
8.5
10
Units
ns
ns
pF
pF
Conditions
C
L
=
15 pF
C
L
=
50 pF
C
L
=
15 pF
C
L
=
50 pF
V
CC
=
Open
(Note 4)
3
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74VHC32
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
Package Number M14A
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
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