MC74F14 Datasheet PDF - Motorola

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MC74F14
Motorola

Part Number MC74F14
Description SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS
Page 3 Pages


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SCHMITT TRIGGERS DUAL 4-INPUT
NAND/HEX INVERTERS
The MC54/74F13 and MC54/74F14 contain logic gates/inverters which ac-
cept standard TTL input signals and provide standard TTL output levels. They
are capable of transforming slowly changing input signals into sharply de-
fined, jitter-free output signals. Additionally, they have greater noise margin
than conventional inverters.
Each circuit contains a Schmitt trigger followed by a Darlington level shifter
and a phase splitter driving a TTL totem pole output. The Schmitt trigger uses
positive feedback to effectively speed up slow input transitions and provide
different input threshold voltages for positive and negative-going transitions.
This hysteresis between the positive-going and negative-going input thresh-
olds (typically 800 mV) is determined internally by resistor ratios and is essen-
tially insensitive to temperature and supply voltage variations.
LOGIC AND CONNECTION DIAGRAMS
MC54/74F13
VCC D
14 13
C N/C B
12 11 10
A
9
O
8
1234567
A B N/C C D O GND
MC54/74F14
VCC A O A O A O
14 13 12 11 10 9 8
MC54/74F13
MC54/74F14
SCHMITT TRIGGERS
DUAL 4-INPUT
NAND/HEX INVERTERS
FASTSCHOTTKY TTL
14
1
J SUFFIX
CERAMIC
CASE 632-08
14
1
N SUFFIX
PLASTIC
CASE 646-06
14
1
D SUFFIX
SOIC
CASE 751A-02
ORDERING INFORMATION
MC54FXXJ
MC74FXXN
MC74FXXD
Ceramic
Plastic
SOIC
1234567
A O A O A O GND
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
Supply Voltage
Operating Ambient Temperature Range
IOH Output Current — High
IOL Output Current — Low
Min Typ Max Unit
54, 74 4.5 5.0 5.5
V
54 –55 25 125 °C
74 0 25 70
54, 74
–1.0 mA
54, 74
20 mA
FAST AND LS TTL DATA
4-14



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MC54/74F13 MC54/74F14
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VT+ Positive-Going Threshold Voltage
1.5
2.0 V VCC = 5.0 V
VT– Negative-Going Threshold Voltage
0.7
1.1 V VCC = 5.0 V
VT+–VT–
Hysteresis
0.4 0.8
V VCC = 5.0 V
VIH Input HIGH Voltage
2.0 V Guaranteed Input HIGH Voltage
VIL Input LOW Voltage
0.8 V Guaranteed Input LOW Voltage
VIK Input Clamp Diode Voltage
–1.2 V VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage
54, 74 2.5
V IOH = –1.0 mA VCC = 4.5
74 2.7
V IOH = –1.0 mA VCC = 4.75
VOL
Output LOW Voltage
0.5 V IOL = 20 mA VCC = MIN
IT+ Input Current at Positive-Going Threshold
–0.14
mA VCC = 5.0 V, VIN = VT+
IT– Input Current at Negative-Going Threshold
–0.18
mA VCC = 5.0 V, VIN = VT–
IIH Input HIGH Current
20 µA VCC = MAX, VIN = 2.7 V
0.1 mA VCC = MAX, VIN = 7.0 V
IIL Input LOW Current
–0.6 mA VCC = MAX, VIN = 0.5 V
IOS
Output Short Circuit Current (Note 2)
–60
–150 mA VCC = MAX, VOUT = 0 V
ICCH
Power Supply Current
F13 4.5 8.5
ICCL
Total, Output HIGH
Power Supply Current
F14 13 22
F13
7.0 10
mA VCC = MAX
Total, Output LOW
F14 23 32
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (CL = 50 pF)
Symbol
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay
Propagation Delay
F13
F14
54/74F
TA = +25°C
VCC = +5.0 V
Min Max
3.5 7.0
3.0 8.0
3.5 7.0
3.0 6.5
54F
TA = –55°C to +125°C
VCC = 5.0 V ± 10%
Min Max
3.5 9.0
3.0 9.5
3.5 9.0
3.0 8.0
74F
TA = 0°C to 70°C
VCC = 5.0 V ± 10%
Min Max
3.5 8.0
3.0 8.5
3.5 8.0
3.0 7.0
Unit
ns
ns
FAST AND LS TTL DATA
4-15



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MC54/74F13 MC54/74F14
FUNCTION TABLE MC54/74F13
Inputs
AB
C
LX
XL
XX
XX
HH
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
X
X
L
X
H
D
X
X
X
L
H
Output
O
H
H
H
H
L
FUNCTION TABLE MC54/74F14
Input
Output
AO
LH
HL
FAST AND LS TTL DATA
4-16



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