MM74C914 Input Voltage Datasheet

MM74C914 Datasheet, PDF, Equivalent


Part Number

MM74C914

Description

Hex Schmitt Trigger with Extended Input Voltage

Manufacture

Fairchild

Total Page 5 Pages
Datasheet
Download MM74C914 Datasheet


MM74C914
October 1987
Revised January 1999
MM74C914
Hex Schmitt Trigger with Extended Input Voltage
General Description
The 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 25V to GND + 25V), and is valuable for applica-
tions involving voltage level shifting or mismatched power
supplies.
The positive and negative-going threshold voltages, VT+
and VT, show low variation with respect to temperature
(typ 0.0005V/°C at VCC = 10V). And the hysteresis, VT+
VT0.2 VCC is guaranteed.
Features
s Hysteresis: 0.45 VCC (typ.) 0.2 VCCguaranteed
s Special input protection: Extended Input Voltage
Range
s Wide supply voltage range: 3V to 15V
s High noise immunity: 0.7 VCC (typ.)
s Low power TTL compatibility: Fan out of 2 driving 74L
Ordering Code:
Order Number Package Number
Package Description
MM74C914M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
MM74C914N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagrams
Pin Assignments for DIP
Special Input Protection
Top View
8V 25V
for the diodes.
© 1999 Fairchild Semiconductor Corporation DS005917.prf
www.fairchildsemi.com

MM74C914
Absolute Maximum Ratings(Note 1)
Operating VCC Range
3V to 15V
Voltage at any Input Pin
Voltage at any other Pin
VCC 25V to GND + 25V
0.3Vto VCC + 0.3V
Absolute Maximum (VCC)
Lead Temperature (TL)
(Soldering, 10 seconds)
Operating Temperature Range (TA)
40°C to +85°C
18V
300°C
Storage Temperature Range (TS)
Power Dissipation
65°C to +150°C
Note 1: “Absolute Maximum Ratings” are those values beyond which the
safety of the device cannot be guaranteed. Except for “Operating Tempera-
Dual-In-Line
Small Outline
700 mW
ture Range”, they are not meant to imply that the devices should be oper-
ated at these limits. The Electrical Characteristics tables provide conditions
500mW for actual device operation.
DC Electrical Characteristics
Min/Max limits apply across temperature range unless otherwise noted
Symbol
Parameter
Conditions
CMOS TO CMOS
VT+ Positive Going Threshold Voltage
VTNegative Going Threshold Voltage
VT+ VT
Hysteresis
VOUT(1)
VOUT(0)
IIN(1)
IIN(0)
ICC
Logical“1” Output Voltage
Logical “0” Output Voltage
Logical “1” Input Current
Logical “0” Input Current
Supply Current
CMOS/LPTTL INTERFACE
VCC = 5V
VCC = 10V
VCC = 15V
VCC = 5V
VCC = 10V
VCC = 15V
VCC = 5V
VCC = 10V
VCC = 15V
VCC = 5V, IO = −10 µA
VCC = 10V, IO = −10 µA
VCC = 5V, IO = +10 µA
VCC = 10V, IO = +10 µA
VCC = 15V, VIN = 25V
VCC = 15V, VIN = −10V
VCC = 15V, VIN = − 10V/25V
VCC = 5V, VIN = − 2.5V (Note 2)
VCC = 10V, VIN = 5V (Note 2)
VCC = 15V, VIN = 7.5V (Note 2)
VIN(1)
Logical “1” Input Voltage
VCC = 5V
VIN(0)
Logical “0” Input Voltage
VCC = 5V
VOUT(1)
Logical “1” Output Voltage
VCC = 4.75V, IO = −360 µA
VOUT(0)
Logical “0” Output Voltage
VCC = 4.75V, IO = 360 µA
OUTPUT DRIVE (See Family Characteristics Data Sheet) (Short Circuit Current)
ISOURCE
Output Source Current
(P-Channel)
VCC = 5V, VOUT = 0V, TA = 25°C
ISOURCE
Output Source Current
(P-Channel)
VCC = 10V, VOUT = 0V, TA = 25°C
ISINK
Output Sink Current
(N-Channel)
VCC = 5V, VOUT = VCC, TA = 25°C
ISINK
Output Sink Current
(N-Channel)
VCC = 10V, VOUT = VCC, TA = 25°C
Note 2: Only one input is at ½ VCC, the others are either at VCC or GND.
Min Typ Max Units
3.0
6.0
9.0
0.7
1.4
2.1
1.0
2.0
3.0
4.5
9.0
100
3.6
6.8
10
1.4
3.2
5
2.2
3.6
5
0.005
0.005
0.05
20
200
600
4.3
8.6
12.9
2.0
4.0
6.0
3.6
7.2
10.8
0.5
1.0
5.0
300
V
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
µA
4.3 V
0.7 V
2.4 V
0.4 V
1.75
3.3
mA
8.0
15
mA
1.75
3.6
mA
8.0 16
mA
www.fairchildsemi.com
2


Features MM74C914 Hex Schmitt Trigger with Extend ed Input Voltage October 1987 Revised January 1999 MM74C914 Hex Schmitt Trig ger with Extended Input Voltage General Description The MM74C914 is a monolith ic CMOS Hex Schmitt trigger with specia l input protection scheme. This scheme allows the input voltage levels to exce ed VCC or ground by at least 10V (VCC 25V to GND + 25V), and is valuable fo r applications involving voltage level shifting or mismatched power supplies. The positive and negative-going thresho ld voltages, VT+ and VT−, show low va riation with respect to temperature (ty p 0.0005V/°C at VCC = 10V). And the hy steresis, VT+ − VT− ≥ 0.2 VCC is guaranteed. Features s Hysteresis: s S pecial Range 0.45 VCC (typ.) 0.2 VCCgua ranteed protection: Extended Input Volt age input s Wide supply voltage range: 3V to 15V s High noise immunity: 0.7 V CC (typ.) s Low power TTL compatibility : Fan out of 2 driving 74L Ordering Co de: Order Number MM74C914M MM74C914N Package Number M14A N14A Package Desc.
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