NSC MM54C914N Hex schmitt trigger with extended input voltage Datasheet

MM54C914/MM74C914 Hex Schmitt
Trigger with Extended Input Voltage
General Description
Features
The MM54C914/MM74C914 is a monolithic CMOS Hex
Schmitt trigger with special input protection scheme. This
scheme allows the input voltage levels to exceed VCC or
ground by at least 10V (VCC b 25V to GND a 25V), and is
valuable for applications involving voltage level shifting or
mismatched power supplies.
The positive and negative-going threshold voltages, VT a
and VTb, show low variation with respect to temperature
(typ 0.0005V/§ C at VCC e 10V). And the hysteresis,
VT a b VTb t 0.2 VCC is guaranteed.
Y
Hysteresis
Y
Special input protection
Y
Wide supply voltage range
High noise immunity
Low power TTL
compatibility
Y
Y
0.45 VCC (typ.)
0.2 VCC guaranteed
Extended Input
Voltage Range
3V to 15V
0.7 VCC (typ.)
Fan out of 2
driving 74L
Connection Diagram
Dual-In-Line Package
Order Number MM54C914 or MM74C914
TL/F/5917 – 1
Top View
Special Input Protection
8V & 25V
for the diodes.
TL/F/5917 – 2
C1995 National Semiconductor Corporation
TL/F/5917
RRD-B30M105/Printed in U. S. A.
MM54C914/MM74C914 Hex Schmitt Trigger with Extended Input Voltage
February 1988
Absolute Maximum Ratings
(Note 1)
Storage Temperature Range (TS)
Power Dissipation
Dual-In-Line
Small Outline
Operating VCC Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Voltage at any Input Pin
VCC b 25V to GND a 25V
b 0.3V to VCC a 0.3V
Voltage at any other Pin
Operating Temperature Range (TA)
b 55§ C to a 125§ C
MM54C914
b 40§ C to a 85§ C
MM74C914
b 65§ C to a 150§ C
700 mW
500 mW
3V to 15V
18V
Absolute Maximum (VCC)
Lead Temperature (TL)
(Soldering, 10 seconds)
300§ C
DC Electrical Characteristics Min/Max limits apply across temperature range unless otherwise noted
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CMOS TO CMOS
VT a
Positive Going Threshold Voltage
VCC e 5V
VCC e 10V
VCC e 15V
3.0
6.0
9.0
3.6
6.8
10
4.3
8.6
12.9
V
V
VTb
Negative Going Threshold Voltage
VCC e 5V
VCC e 10V
VCC e 15V
0.7
1.4
2.1
1.4
3.2
5
2.0
4.0
6.0
V
V
VT a b VTb
Hysteresis
VCC e 5V
VCC e 10V
VCC e 15V
1.0
2.0
3.0
2.2
3.6
5
3.6
7.2
10.8
V
V
V
VOUT(1)
Logical ‘‘1’’ Output Voltage
VCC e 5V, IO e b10 mA
VCC e 10V, IO e b10 mA
4.5
9.0
VOUT(0)
Logical ‘‘0’’ Output Voltage
VCC e 5V, IO e a 10 mA
VCC e 10V, IO e a 10 mA
IIN(1)
Logical ‘‘1’’ Input Current
VCC e 15V, VIN e 25V
IIN(0)
Logical ‘‘0’’ Input Current
VCC e 15V, VIN e b10V
ICC
Supply Current
VCC
VCC
VCC
VCC
e
e
e
e
V
V
0.5
1.0
0.005
b 100
15V, VIN e b 10V/25V
5V, VIN e b 2.5V (Note 4)
10V, VIN e 5V (Note 4)
15V, VIN e 7.5V (Note 4)
5.0
b 0.005
0.05
20
200
600
V
V
mA
mA
300
mA
mA
mA
mA
CMOS/LPTTL INTERFACE
VIN(1)
Logical ‘‘1’’ Input Voltage
VCC e 5V
VIN(0)
Logical ‘‘0’’ Input Voltage
VCC e 5V
4.3
VOUT(1)
Logical ‘‘1’’ Output Voltage
54C, VCC e 4.5V, IO e b360 mA
74C, VCC e 4.75V, IO e b360 mA
VOUT(0)
Logical ‘‘0’’ Output Voltage
54C, VCC e 4.5V, IO e 360 mA
74C, VCC e 4.75V, IO e 360 mA
V
0.7
2.4
2.4
V
V
V
0.4
0.4
V
V
OUTPUT DRIVE (See 54C/74C Family Characteristics Data Sheet) (Short Circuit Current)
ISOURCE
Output Source Current
(P-Channel)
VCC e 5V, VOUT e 0V, TA e 25§ C
ISOURCE
Output Source Current
(P-Channel)
VCC e 10V, VOUT e 0V, TA e 25§ C
ISINK
Output Sink Current
(N-Channel)
ISINK
Output Sink Current
(N-Channel)
b 1.75
b 3.3
mA
b 8.0
b 15
mA
VCC e 5V, VOUT e VCC, TA e 25§ C
1.75
3.6
mA
VCC e 10V, VOUT e VCC, TA e 25§ C
8.0
16
mA
2
AC Electrical Characteristics* TA e 25§ C, CL e 50 pF, unless otherwise specified
Symbol
Parameter
Typ
Max
Units
VCC e 5V
Conditions
220
400
ns
VCC e 10V
80
200
Input Capacitance
Any Input (Note 2)
5
pF
Power Dissipation Capacitance
(Note 3) Per Gate
20
pF
tPHL,
tPLH
Propagation Delay from Input to Output
CIN
CPD
Min
ns
*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: CPD determines the no load AC power consumption of any CMOS device. For complete explanation see 54C/74C Family Characteristics Application Note,
AN-90.
Note 4: Only one input is at (/2 VCC, the others are either at VCC or GND.
Typical Performance Characteristics
Typical Transfer Characteristics
Guaranteed Trip Point Range
TL/F/5917 – 4
TL/F/5917 – 5
Typical Application
TL/F/5917 – 3
Note: VCC1 e VCC2
GND1 e GND2
TL/F/5917 – 6
3
MM54C914/MM74C914 Hex Schmitt Trigger with Extended Input Voltage
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
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