November 1992
Revised March 1999
7
4
VH
C32
Quad 2-I
nput OR
Gat
e
1999 Fairchild Semiconductor Corporation
DS011518.prf
www.fairchildsemi.com
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
A (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:
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
Pin Descriptions
Connection Diagram
Truth Table
Order Number
Package Number
Package Description
74VHC32M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow
74VHC32SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC32MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC32N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names
Description
A
n
, B
n
Inputs
O
n
Outputs
A
B
O
H
H
H
L
H
H
H
L
H
L
L
L
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2
7
4
VH
C32
Absolute Maximum Ratings
(Note 1)
Recommended Operating
Conditions
(Note 2)
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
Noise Characteristics
Note 3: Parameter guaranteed by design.
Supply Voltage (V
CC
)
-
0.5V to
+
7.0V
DC Input Voltage (V
IN
)
-
0.5V to
+
7.0V
DC Output Voltage (V
OUT
)
-
0.5V to V
CC
+
0.5V
Input Diode Current (I
IK
)
-
20 mA
Output Diode Current (I
OK
)
20 mA
DC Output Current (I
OUT
)
25 mA
DC V
CC
/GND Current (I
CC
)
50 mA
Storage Temperature (T
STG
)
-
65
C to
+
150
C
Lead Temperature (T
L
)
(Soldering, 10 seconds)
260
C
Supply Voltage (V
CC
)
2.0V to
+
5.5V
Input Voltage (V
IN
)
0V to
+
5.5V
Output Voltage (V
OUT
)
0V to V
CC
Operating Temperature (T
OPR
)
-
40
C to
+
85
C
Input Rise and Fall Time (t
r
, t
f
)
V
CC
=
3.3V
0.3V
0
100 ns/V
V
CC
=
5.0V
0.5V
0
20 ns/V
Symbol
Parameter
V
CC
(V)
T
A
=
25
C
T
A
=
-
40
C to
+
85
C
Units
Conditions
Min
Typ
Max
Min
Max
V
IH
HIGH Level
2.0
1.50
1.50
V
Input Voltage
3.0
-
5.5
0.7 V
CC
0.7 V
CC
V
IL
LOW Level
2.0
0.50
0.50
V
Input Voltage
3.0
-
5.5
0.3 V
CC
0.3 V
CC
V
OH
HIGH Level
2.0
1.9
2.0
1.9
V
IN
=
V
IH
I
OH
=
-
50
A
Output Voltage
3.0
2.9
3.0
2.9
V
or V
IL
4.5
4.4
4.5
4.4
3.0
2.58
2.48
V
I
OH
=
-
4 mA
4.5
3.94
3.80
I
OH
=
-
8 mA
V
OL
LOW
Level 2.0
0.0
0.1
0.1
V
IN
=
V
IH
I
OL
=
50
A
Output Voltage
3.0
0.0
0.1
0.1
V
or V
IL
4.5
0.0
0.1
0.1
3.0
0.36
0.44
V
I
OL
=
4 mA
4.5
0.36
0.44
I
OL
=
8 mA
I
IN
Input Leakage
0
-
5.5
0.1
1.0
A
V
IN
=
5.5V or GND
Current
I
CC
Quiescent Supply Current
5.5
2.0
20.0
A
V
IN
=
V
CC
or GND
Symbol
Parameter
V
CC
(V)
T
A
=
25
C
Units
Conditions
Typ
Limit
V
OLP
Quiet Output Maximum
5.0
0.3
0.8
V
C
L
=
50 pF
(Note 3)
Dynamic V
OL
V
OLV
Quiet Output Minimum
5.0
-
0.3
-
0.8
V
C
L
=
50 pF
(Note 3)
Dynamic V
OL
V
IHD
Minimum HIGH Level
5.0
3.5
V
C
L
=
50 pF
(Note 3)
Dynamic Input Voltage
V
ILD
Maximum LOW Level
5.0
1.5
V
C
L
=
50 pF
(Note 3)
Dynamic Input Voltage
3
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7
4
VH
C32
AC Electrical Characteristics
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).
Symbol
Parameter
V
CC
(V)
T
A
=
25
C
T
A
=
-
40
C to
+
85
C
Units Conditions
Min
Typ
Max
Min
Max
t
PHL
Propagation Delay
3.3
5.5
7.9
1.0
9.5
ns
C
L
=
15 pF
t
PLH
0.3
8.0
11.4
1.0
13.0
C
L
=
50 pF
5.0
3.8
5.5
1.0
6.5
ns
C
L
=
15 pF
0.5
5.3
7.5
1.0
8.5
C
L
=
50 pF
C
IN
Input Capacitance
4
10
10
pF
V
CC
=
Open
C
PD
Power Dissipation
14
pF
(Note 4)
Capacitance
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4
7
4
VH
C32
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
5
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7
4
VH
C32
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC14
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