4-14
FAST AND LS TTL DATA
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.
VCC
GND
13
14
12
11
10
9
8
2
1
3
4
5
6
7
VCC
GND
13
14
12
11
10
9
8
2
1
3
4
5
6
7
MC54/74F13
MC54/74F14
LOGIC AND CONNECTION DIAGRAMS
D
C
N/C
B
A
O
A
B
N/C
C
D
O
A
O
A
O
A
O
A
O
A
O
A
O
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54, 74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
54
55
25
125
C
74
0
25
70
IOH
Output Current -- High
54, 74
1.0
mA
IOL
Output Current -- Low
54, 74
20
mA
MC54FXXJ
Ceramic
MC74FXXN
Plastic
MC74FXXD
SOIC
D SUFFIX
SOIC
CASE 751A-02
N SUFFIX
PLASTIC
CASE 646-06
J SUFFIX
CERAMIC
CASE 632-08
MC54/74F13
MC54/74F14
SCHMITT TRIGGERS
DUAL 4-INPUT
NAND/HEX INVERTERS
FAST
TM
SCHOTTKY TTL
14
1
14
1
ORDERING INFORMATION
14
1
4-15
FAST AND LS TTL DATA
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
A
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
VCC = MAX
Total, Output HIGH
F14
13
22
mA
VCC = MAX
ICCL
Power Supply Current
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)
54/74F
54F
74F
TA = +25
C
TA = 55
C to +125
C
TA = 0
C to 70
C
VCC = +5.0 V
VCC = 5.0 V
10%
VCC = 5.0 V
10%
Symbol
Parameter
Min
Max
Min
Max
Min
Max
Unit
tPLH
Propagation Delay
F13
3.5
7.0
3.5
9.0
3.5
8.0
ns
tPHL
3.0
8.0
3.0
9.5
3.0
8.5
tPLH
Propagation Delay
F14
3.5
7.0
3.5
9.0
3.5
8.0
ns
tPHL
3.0
6.5
3.0
8.0
3.0
7.0
4-16
FAST AND LS TTL DATA
MC54/74F13
MC54/74F14
Input
Output
A
O
L
H
H
L
FUNCTION TABLE MC54/74F14
FUNCTION TABLE MC54/74F13
Inputs
Output
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H
H
H
H
L
A
B
C
D
O
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
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