DS75124 [NSC]
Triple Line Receiver; 三重线路接收器
| 型号： | DS75124 |
| 厂家： | 
National Semiconductor |
| 描述： | Triple Line Receiver |
| 文件： | 总4页 (文件大小：95K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 1996
DS75124 Triple Line Receiver
General Description
Features
Y
Built-in input threshold hysteresis
The DS75124 is designed to meet the input/output interface
specifications for IBM System 360. It has built-in hysteresis
on one input on each of the three receivers to provide large
noise margin. The other inputs on each receiver are in a
standard TTL configuration. The DS75124 is compatible
with standard TTL logic and supply voltage levels.
Y
High speed . . . typical propagation delay time 20 ns
Independent channel strobes
Y
Y
Y
Y
Input gating increases application flexibility
Single 5.0V supply operation
Plug-in replacement for the SN75124 and the 8T24
Connection Diagram and Truth Table
Dual-In-Line Package
Inputs
Output
Y
²
A
B
R
S
H
X
L
H
X
L
X
H
X
L
L
L
X
X
X
L
L
H
X
H
X
H
H
H
H
L
X
X
X
L
e
e
e
low level, X irrelevant
H
high level, L
²
B input and last two lines of the truth table
are applicable to receivers 1 and 2 only
TL/F/5792–1
Top View
Order Number DS75124N
See NS Package Number N16A
Typical Application
TL/F/5792–2
C
1996 National Semiconductor Corporation
TL/F/5792
RRD-B30M36/Printed in U. S. A.
http://www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
a
0 C to 75 C
Operating Temperature Range
Storage Temperature Range
§
65 C to 150 C
§
b
a
§
§
Lead Temperature (Soldering, 4 seconds)
260 C
§
Supply Voltage, V
Input Voltage
7.0V
CC
*Derate molded package 10.9 mW/ C above 25 C.
§
§
R Input with V Applied
CC
7.0V
6.0V
5.5V
Operating Conditions
Min
R Input with V not Applied
CC
Max
Units
V
A, B, or S Input
Output Voltage
Output Current
Supply Voltage, V
CC
4.75
5.25
7.0V
b
High Level Output Current,
800
mA
g
100 mA
I
OH
Low Level Output Current,
16
mA
Maximum Power Dissipation* at 25 C
Molded Package
§
1362 mW
I
OL
Operating Temperature, T
a
0
75
C
§
A
Electrical Characteristics (Notes 2 and 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
V
High Level Input Voltage
A, B, or S
2.0
1.7
IH
R
V
V
IL
Low Level Input Voltage
A, B, or S
R
0.8
0.8
V
V
b
e
e
e
e
5.0V, T 25 C, R, (Note 6)
A
V
V
V
T
Hysteresis
V
V
V
0.2
0.4
V
a
b
§
T
CC
CC
CC
e b
b
1.5
Input Clamp Voltage
5.0V, I
12 mA, A, B, or S
V
I
I
e
I
Input Current at Maximum
Input Voltage
5.25V, V
IN
5.5V, A, B, or S
1
mA
mA
mA
I
e
e
V
7.0V
5.0
5.0
I
I
R
e
V
6.0V, V
0V
CC
e
e b
e
V
V
V
High Level Output Voltage
Low Level Output Voltage
High Level Input Current
V
V
, V
IHMIN IL
,
ILMAX
OH
IH
2.6
V
V
I
800 mA, (Note 4)
OH
e
e
e
V , I 16 mA,
ILMAX OL
V
V , V
IHMIN IL
OL
IH
(Note 4)
0.4
e
e
e
I
V
I
V
I
V
I
V
V
4.5V, A, B, or S
3.11V, R
40
mA
mA
mA
mA
mA
IH
170
b
b
1.6
I
I
I
Low Level Input Current
Short Circuit Output Current
Supply Current
0.4V, A, B, or S
0.1
IL
e
e
e
A
b
b
100
5.0V, T
5.25V
25 C, (Note 5)
§
50
OS
CC
CC
CC
e
72
Switching Characteristics T
25 C, nominal power supplies unless otherwise noted
§
A
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
t
Propagation Delay Time, Low-to-High
Level Output from R Input
(See AC Test Circuit and Switching
Time Waveforms)
PLH
20
20
30
ns
Propagation Delay Time, High-to-Low
Level Output from R Input
(See AC Test Circuit and Switching
Time Waveforms)
PHL
30
ns
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’
they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2: All currents into device pins are shown as positive, currents out of device pins shown as negative, all voltage values are referenced with respect to network
ground terminal, unless otherwise noted. All values shown as max or min on absolute value basis.
a
Note 3: Min/max limits apply across the guaranteed operating temperature range of 0 C to 75 C for DS75124, unless otherwise specified. Typicals are for V
§
§
CC
e
e
25 C. Positive current is defined as current into the referenced pin.
5.0V, T
§
Note 4: The output voltage and current limits are guaranteed for any appropriate combination of high and low inputs specified by the truth table for the desired
A
output.
Note 5: Not more than one output should be shorted at a time.
Note 6: Hysteresis is the difference between the positive going input threshold voltage, V , and the negative going input threshold voltage, V
a
.
b
T
T
http://www.national.com
2
AC Test Circuit and Switching Time Waveforms
TL/F/5792–3
&
e
W
e
200 ns, duty cycle 50%
Note 1: The pulse generator has the following characteristics: Z
50X, t
OUT
Note 2: C includes probe and jig capacitance.
L
TL/F/5792–4
Typical Performance Characteristics
Output Voltage vs
Receiver Input Voltage
TL/F/5792–5
3
http://www.national.com
Physical Dimensions inches (millimeters)
Molded Dual-In-Line Package (N)
Order Number DS75124N
NS Package Number N16A
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