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MM54C914/MM74C914 Hex Schmitt
Trigger with Extended Input Voltage
MM54C914/MM74C914 Hex Schmitt Trigger with Extended Input Voltage
February 1988
General Description
The MM54C914/MM74C914 is a monolithic CMOS Hex
Schmitt trigger with special input protection scheme. This
scheme allows the input voltage levels to exceed V
ground by at least 10V (V
valuable for applications involving voltage level shifting or
b
25V to GNDa25V), and is
CC
CC
mismatched power supplies.
The positive and negative-going threshold voltages, V
and V
, show low variation with respect to temperature
b
T
(typ 0.0005V/
b
V
V
a
b
T
T
CatV
§
t
0.2 VCCis guaranteed.
e
10V). And the hysteresis,
CC
T
Connection Diagram
Dual-In-Line Package
Top View
TL/F/5917– 1
Features
Y
Hysteresis 0.45 VCC(typ.)
Y
or
Special input protection Extended Input
Y
Wide supply voltage range 3V to 15V
Y
High noise immunity 0.7 VCC(typ.)
Y
a
Low power TTL Fan out of 2
compatibility driving 74L
Order Number MM54C914 or MM74C914
0.2 V
guaranteed
CC
Voltage Range
Special Input Protection
8V&25V
for the diodes.
TL/F/5917– 2
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
TL/F/5917
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Voltage at any Input Pin V
Voltage at any other Pin
Operating Temperature Range (T
MM54C914
MM74C914
b
25V to GNDa25V
CC
b
0.3V to V
)
A
b
55§Ctoa125§C
b
a
0.3V
CC
40§Ctoa85§C
Storage Temperature Range (T
)
S
Power Dissipation
Dual-In-Line 700 mW
Small Outline 500 mW
Operating V
Absolute Maximum (V
Range 3V to 15V
CC
) 18V
CC
Lead Temperature (TL)
(Soldering, 10 seconds) 300
65§Ctoa150§C
b
DC Electrical Characteristics Min/Max limits apply across temperature range unless otherwise noted
Symbol Parameter Conditions Min Typ Max Units
CMOS TO CMOS
V
T
V
T
V
T
V
OUT(1)
V
OUT(0)
I
IN(1)
I
IN(0)
I
CC
a
b
b
a
Positive Going Threshold Voltage V
Negative Going Threshold Voltage V
V
Hysteresis V
b
T
Logical ‘‘1’’ Output Voltage V
Logical ‘‘0’’ Output Voltage V
Logical ‘‘1’’ Input Current V
Logical ‘‘0’’ Input Current V
Supply Current V
CMOS/LPTTL INTERFACE
V
IN(1)
V
IN(0)
V
OUT(1)
V
OUT(0)
Logical ‘‘1’’ Input Voltage V
Logical ‘‘0’’ Input Voltage V
Logical ‘‘1’’ Output Voltage 54C, V
Logical ‘‘0’’ Output Voltage 54C, V
OUTPUT DRIVE (See 54C/74C Family Characteristics Data Sheet) (Short Circuit Current)
I
SOURCE
I
SOURCE
I
SINK
I
SINK
Output Source Current V
(P-Channel)
Output Source Current V
(P-Channel)
Output Sink Current V
(N-Channel)
Output Sink Current V
(N-Channel)
e
5V 3.0 3.6 4.3
CC
e
V
10V 6.0 6.8 8.6
CC
e
V
15V 9.0 10 12.9
CC
e
5V 0.7 1.4 2.0
CC
e
V
10V 1.4 3.2 4.0
CC
e
V
15V 2.1 5 6.0
CC
e
5V 1.0 2.2 3.6 V
CC
e
V
10V 2.0 3.6 7.2 V
CC
e
V
15V 3.0 5 10.8 V
CC
e
eb
5V, I
CC
e
V
10V, I
CC
e
5V, I
CC
e
V
10V, I
CC
e
15V, V
CC
e
15V, V
CC
e
15V, V
CC
e
V
5V, V
CC
e
V
10V, V
CC
e
V
15V, V
CC
e
5V 4.3 V
CC
e
5V 0.7 V
CC
CC
74C, V
CC
CC
74C, V
CC
e
5V, V
CC
e
10V, V
CC
e
5V, V
CC
e
10V, V
CC
10 mA 4.5 V
O
eb
10 mA 9.0 V
O
ea
10 mA 0.5 V
O
ea
10 mA 1.0 V
O
e
25V 0.005 5.0 mA
IN
eb
10V
IN
eb
10V/25V 0.05 300 mA
IN
eb
2.5V (Note 4) 20 mA
IN
e
5V (Note 4) 200 mA
IN
e
7.5V (Note 4) 600 mA
IN
e
e
e
e
4.5V, I
4.75V, I
4.5V, I
4.75V, I
e
OUT
OUT
e
OUT
OUT
eb
360 mA 2.4 V
O
eb
360 mA 2.4 V
O
e
360 mA 0.4 V
O
e
360 mA 0.4 V
O
e
0V, T
e
VCC,T
e
A
0V, T
VCC,T
25§C
e
25§C
A
e
25§C
A
e
A
b
100b0.005 mA
b
b
1.75
8.0
b
b
1.75 3.6 mA
25§C
8.0 16 mA
3.3 mA
15 mA
C
§
V
V
V
V
2
AC Electrical Characteristics* T
e
A
25§C, C
e
50 pF, unless otherwise specified
L
Symbol Parameter Conditions Min Typ Max Units
t
, Propagation Delay from Input to Output V
PHL
t
PLH
C
IN
C
PD
*AC Parameters are guaranteed by DC correlated testing.
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’,
they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2: Capacitance is guaranteed by periodic testing.
Note 3: C
AN-90.
Note 4: Only one input is at (/2 V
Input Capacitance Any Input (Note 2) 5 pF
Power Dissipation Capacitance (Note 3) Per Gate 20 pF
determines the no load AC power consumption of any CMOS device. For complete explanation see 54C/74C Family Characteristics Application Note,
PD
, the others are either at VCCor GND.
CC
e
5V 220 400 ns
CC
e
V
10V 80 200 ns
CC
Typical Performance Characteristics
Typical Transfer Characteristics
TL/F/5917– 4
Guaranteed Trip Point Range
Typical Application
e
Note: V
V
CC1
CC2
GND1eGND2
TL/F/5917– 5
TL/F/5917– 3
TL/F/5917– 6
3
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number MM54C914J or MM74C914J
NS Package Number J14A
Molded Dual-In-Line Package (N)
Order Number MM54C914N or MM74C914N
NS Package Number N14A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
MM54C914/MM74C914 Hex Schmitt Trigger with Extended Input Voltage
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or 2. A critical component is any component of a life
systems which, (a) are intended for surgical implant support device or system whose failure to perform can
into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life
failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.
National Semiconductor National Semiconductor National Semiconductor National Semiconductor
Corporation Europe Hong Kong Ltd. Japan Ltd.
1111 West Bardin Road Fax: (
Arlington, TX 76017 Email: cnjwge@tevm2.nsc.com Ocean Centre, 5 Canton Rd. Fax: 81-043-299-2408
Tel: 1(800) 272-9959 Deutsch Tel: (
Fax: 1(800) 737-7018 English Tel: (
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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a
49) 0-180-530 85 86 13th Floor, Straight Block, Tel: 81-043-299-2309
a
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