National Semiconductor MM54HC14, MM74HC14 Service Manual
MM54HC14/MM74HC14
Hex Inverting Schmitt Trigger
MM54HC14/MM74HC14 Hex Inverting Schmitt Trigger
November 1995
General Description
The MM54HC14/MM74HC14 utilizes advanced silicon-gate
CMOS technology to achieve the low power dissipation and
high noise immunity of standard CMOS, as well as the capability to drive 10 LS-TTL loads.
The 54HC/74HC logic family is functionally and pinout compatible with the standard 54LS/74LS logic family. All inputs
are protected from damage due to static discharge by internal diode clamps to V
and ground.
CC
Connection and Schematic Diagrams
Dual-In-Line Package
Top View
Order Number MM54HC14 or MM74HC14
Features
Y
Typical propagation delay: 13 ns
Y
Wide power supply range: 2–6V
Y
Low quiescent current: 20 mA maximum (74HC Series)
Y
Low input current: 1 mA maximum
Y
Fanout of 10 LS-TTL loads
Y
Typical hysteresis voltage: 0.9V at V
CC
TL/F/5105– 1
e
4.5V
TL/F/5105– 2
C
1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
TL/F/5105
Absolute Maximum Ratings (Notes1&2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
CC
)
DC Input Voltage (VIN)
DC Output Voltage (V
OUT
)
Clamp Diode Current (IIK,IOK)
DC Output Current, per pin (I
OUT
)
DC VCCor GND Current, per pin (ICC)
Storage Temperature Range (T
STG
b
b
)
b
0.5 toa7.0V
1.5 to V
CC
0.5 to V
CC
g
g
b
g
65§Ctoa150§C
a
1.5V
a
0.5V
20 mA
25 mA
50 mA
Power Dissipation (P
(Note 3) 600 mW
S.O. Package only 500 mW
Lead Temp. (T
Operating Conditions
Supply Voltage (V
DC Input or Output Voltage 0 V
(V
IN,VOUT
Operating Temp. Range (T
MM74HC
MM54HC
DC Electrical Characteristics (Note 4)
e
T
25§C
Symbol Parameter Conditions V
V
T
Positive Going Minimum 2.0V 1.2 1.0 1.0 1.0 V
a
Threshold Voltage 4.5V 2.7 2.0 2.0 2.0 V
6.0V 3.2 3.0 3.0 3.0 V
Maximum 2.0V 1.2 1.5 1.5 1.5 V
4.5V 2.7 3.15 3.15 3.15 V
6.0V 3.2 4.2 4.2 4.2 V
V
T
Negative Going Minimum 2.0V 0.7 0.3 0.3 0.3 V
b
Threshold Voltage 4.5V 1.8 0.9 0.9 0.9 V
6.0V 2.2 1.2 1.2 1.2 V
Maximum 2.0V 0.7 1.0 1.0 1.0 V
4.5V 1.8 2.2 2.2 2.2 V
6.0V 2.2 3.0 3.0 3.0 V
V
H
Hysteresis Voltage Minimum 2.0V 0.5 0.2 0.2 0.2 V
4.5V 0.9 0.4 0.4 0.4 V
6.0V 1.0 0.5 0.5 0.5 V
Maximum 2.0V 0.5 1.0 1.0 1.0 V
4.5V 0.9 1.4 1.4 1.4 V
6.0V 1.0 1.5 1.5 1.5 V
V
OH
Minimum High Level V
Output Voltage
e
V
IN
IL
e
I
20 mA 2.0V 2.0 1.9 1.9 1.9 V
l
l
OUT
4.5V 4.5 4.4 4.4 4.4 V
6.0V 6.0 5.9 5.9 5.9 V
e
V
V
IN
IL
e
I
4.0 mA 4.5V 4.2 3.98 3.84 3.7 V
l
l
OUT
e
I
5.2 mA 6.0V 5.7 5.48 5.34 5.2 V
l
l
OUT
V
OL
Maximum Low Level V
Output Voltage
e
V
IN
IH
e
I
20 mA 2.0V 0 0.1 0.1 0.1 V
l
l
OUT
4.5V 0 0.1 0.1 0.1 V
6.0V 0 0.1 0.1 0.1 V
e
V
V
IN
IH
e
I
4.0 mA 4.5V 0.2 0.26 0.33 0.4 V
l
l
OUT
e
I
5.2 mA 6.0V 0.2 0.26 0.33 0.4 V
l
l
OUT
I
IN
I
CC
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating Ð plastic ‘‘N’’ package:
Note 4: For a power supply of 5V
designing with this supply. Worst case V
I
Maximum Input V
Current
Maximum Quiescent V
Supply Current I
, and IOZ) occur for CMOS at the higher voltage and so the 6.0V values should be used.
CC
e
VCCor GND 6.0V
IN
e
VCCor GND 6.0V 2.0 20 40 m A
IN
e
0 mA
OUT
g
10% the worst case output voltages (VOH, and VOL) occur for HC at 4.5V. Thus the 4.5V values should be used when
and VILoccur at V
IH
e
5.5V and 4.5V respectively. (The VIHvalue at 5.5V is 3.85V.) The worst case leakage current (IIN,
CC
A
CC
Typ Guaranteed Limits
g
0.1
b
12 mW/§C from 65§Cto85§C; ceramic ‘‘J’’ package:b12 mW/§C from 100§Cto125§C.
2
)
D
) (Soldering 10 seconds) 260§C
L
Min Max Units
)26V
CC
a
a
eb
55 to 125§C
g
1.0 mA
CC
85
125
)
)
A
74HC 54HC
eb
T
40 to 85§CT
A
g
1.0
b
40
b
55
A
V
C
§
C
§
Units
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