Motorola MC74F125D, MC74F125N, MC74F126D, MC74F126N, MC54F126J Datasheet
4-48
FAST AND LS TTL DATA
3-STATE QUAD BUFFERS
• High Impedance NPN Base Inputs for Reduced Loading
MC54/74F126
MC54/74F125
1314 12 11 10 9 8
21 3 4 5 6 7
GND
V
CC
4C 4A 4Y 3C 3A 3Y
1A1C 1Y 2C 2A 2Y
1314 12 11 10 9 8
21 3 4 5 6 7
GND
4C 4A 4Y 3C 3A 3Y
1A1C 1Y 2C 2A 2Y
V
CC
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage 54, 74 4.5 5.0 5.5 V
T
A
Operating Ambient Temperature Range 54 –55 25 125 °C
74 0 25 70
I
OH
Output Current — High 54
74
–12
–15
mA
I
OL
Output Current — Low 54
74
48
64
mA
J SUFFIX
CERAMIC
CASE 632-08
N SUFFIX
PLASTIC
CASE 646-06
D SUFFIX
SOIC
CASE 751A-02
MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXD SOIC
MC54/74F125
MC54/74F126
QUAD BUFFERS, 3-STATE
FAST SHOTTKY TTL
14
1
14
1
ORDERING INFORMATION
14
1
4-49
FAST AND LS TTL DATA
MC54/74F125 • MC54/74F126
Inputs Output
Inputs Output
C
A Y C A Y
L
L
H
L
H
X
L
H
Z
L
H
X
L
H
Z
H
H
L
Function Table MC54/74F125 Function Table MC54/74F126
L = LOW Voltage Level
H = HIGH Voltage Level
X = Don’t Care
Z = High Impedance (off)
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter Min Typ Max Unit Test Conditions
V
IH
Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage
V
IL
Input LOW Voltage 0.8 V Guaranteed Input LOW Voltage
V
IK
Input Clamp Diode Voltage –1.2 V IIN = –18 mA VCC = MIN
54,74 2.4 3.4 V IOH = –3.0 mA VCC = 4.50 V
74 2.7 3.4 V IOH = –3.0 mA VCC = 4.75 V
VOHOutput HIGH Voltage
54 2.0 V IOH = –12 mA VCC = 4.50 V
74 2.0 V IOH = –15 mA
54 0.55 V IOL = 48 mA VCC = MAX
VOLOutput LOW Voltage
74 0.55 V IOL = 64 mA
I
OZH
Output Off Current
HIGH
50 µA V
OUT
= 2.7 V VCC = MAX
I
OZL
Output Off Current LOW –50 µA V
OUT
= 0.5 V VCC = MAX
Input HIGH Current 20 VIN = 2.7 V VCC = MAX
IH
100 µA VIN = 7.0 V VCC = 0 V
I
IL
Input LOW Current –20 µA VIN = 0.5 V VCC = MAX
I
OS
Output Short Ciru‘cuit Current Note 2 –100 –225 mA V
OUT
= GND VCC = MAX
I
CCH
24
F125 I
CCL
40
I
CCZ
35
I
CC
I
CCH
30
mA
VCC = MAX
F126 I
CCL
48
I
CCZ
39
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.
I
IH
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