4-48
FAST AND LS TTL DATA
3-STATE QUAD BUFFERS
•
High Impedance NPN Base Inputs for Reduced Loading
MC54/74F126
MC54/74F125
13
14
12
11
10
9
8
2
1
3
4
5
6
7
GND
VCC
4C
4A
4Y
3C
3A
3Y
1A
1C
1Y
2C
2A
2Y
13
14
12
11
10
9
8
2
1
3
4
5
6
7
GND
4C
4A
4Y
3C
3A
3Y
1A
1C
1Y
2C
2A
2Y
VCC
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
–12
–15
mA
IOL
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
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
IIN = –18 mA
VCC = MIN
VOH
Output HIGH Voltage
54,74
2.4
3.4
V
IOH = –3.0 mA
VCC = 4.50 V
VOH
Output HIGH Voltage
74
2.7
3.4
V
IOH = –3.0 mA
VCC = 4.75 V
VOH
Output HIGH Voltage
54
2.0
V
IOH = –12 mA
VCC = 4.50 V
74
2.0
V
IOH = –15 mA
VOL
Output LOW Voltage
54
0.55
V
IOL = 48 mA
VCC = MAX
VOL
Output LOW Voltage
74
0.55
V
IOL = 64 mA
IOZH
Output Off Current
HIGH
50
µ
A
VOUT = 2.7 V
VCC = MAX
IOZL
Output Off Current LOW
–50
µ
A
VOUT = 0.5 V
VCC = MAX
IIH
Input HIGH Current
20
VIN = 2.7 V
VCC = MAX
IH
100
µ
A
VIN = 7.0 V
VCC = 0 V
IIL
Input LOW Current
–20
µ
A
VIN = 0.5 V
VCC = MAX
IOS
Output Short Ciru‘cuit Current Note 2
–100
–225
mA
VOUT = GND
VCC = MAX
ICCH
24
mA
VCC = MAX
F125
ICCL
40
mA
VCC = MAX
ICCZ
35
mA
VCC = MAX
ICC
ICCH
30
mA
VCC = MAX
F126
ICCL
48
ICCZ
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.
