74LS126A 반도체 회로 부품 판매점
Quad TRI-STATE Buffer
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 National Semiconductor |
September 1991
DM74LS126A Quad TRI-STATE Buffer
General Description
This device contains four independent gates each of which
performs a non-inverting buffer function The outputs have
the TRI-STATE feature When enabled the outputs exhibit
the low impedance characteristics of a standard LS output
with additional drive capability to permit the driving of bus
lines without external resistors When disabled both the
output transistors are turned off presenting a high-imped-
ance state to the bus line Thus the output will act neither as
a significant load nor as a driver To minimize the possibility
that two outputs will attempt to take a common bus to oppo-
site logic levels the disable time is shorter than the enable
time of the outputs
Connection Diagram
Dual-In-Line Package
Function Table
Order Number DM74LS126AM or DM74LS126AN
See NS Package Number M14A or N14A
YeA
Inputs
Output
AC
Y
LH
HH
XL
L
H
Hi-Z
H e High Logic Level
L e Low Logic Level
X e Either Low or High Logic Level
Hi-Z e TRI-STATE (Outputs are disabled)
TL F 6388 – 1
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 6388
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings (Note)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Min
4 75
0
Nom
5
Max
5 25
08
b2 6
24
70
Units
V
V
V
mA
mA
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI Input Clamp Voltage
VOH
High Level Output
Voltage
VOL Low Level Output
Voltage
II Input Current Max
Input Voltage
VCC e Min II e b18 mA
VCC e Min IOH e Max
VIH e Min
VCC e Min IOL e Max
VIL e Max VIH e Min
IOL e 12 mA VCC e Min
VCC e Max VI e 7V
24
IIH
High Level Input Current
VCC e Max VI e 2 7V
IIL Low Level Input
Current
VCC e Max VI e 0 4V
IOZH
Off-State Output Current
with High Level Output
Voltage Applied
VCC e Max VO e 2 4V
VIH e Min VIL e Max
IOZL
Off-State Output Current
with Low Level Output
Voltage Applied
VCC e Max VO e 0 4V
VIH e Min VIL e Max
IOS Short Circuit
Output Current
VCC e Max
(Note 2)
b20
ICC Supply Current
VCC e Max
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
Typ
(Note 1)
0 35
0 25
12
Max
b1 5
05
04
01
20
b0 4
20
b20
b100
22
Units
V
V
V
mA
mA
mA
mA
mA
mA
mA
2
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74LS126A buffer
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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전력반도체 문의 : 010-3582-2743
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