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SN75154
QUADRUPLE LINE RECEIVER
SLLS083B – NOVEMBER 1970 – REVISED MAY 1995
D
D
D
D
D
D
D
Meets or Exceeds the Requirements of
ANSI Standard EIA/TIA-232-E and ITU
Recommendation V.28
Input Resistance . . . 3 kΩ to 7 kΩ Over Full
EIA/TIA-232-E Voltage Range
Input Threshold Adjustable to Meet
Fail-Safe Requirements Without Using
External Components
Built-In Hysteresis for Increased Noise
Immunity
Inverting Output Compatible With TTL
Output With Active Pullup for Symmetrical
Switching Speeds
Standard Supply Voltages . . . 5 V or 12 V
D OR N PACKAGE
(TOP VIEW)
3T
2T
1T
1A
2A
3A
4A
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC2
V
CC1
4T
1Y
2Y
3Y
4Y
R1
†
† For function of R1, see schematic
description
The SN75154 is a monolithic low-power Schottky line receiver designed to satisfy the requirements of the
standard interface between data terminal equipment and data communication equipment as defined by ANSI
Standard EIA/TIA-232-E. Other applications are for relatively short, single-line, point-to-point data transmission
and for level translators. Operation is normally from a single 5-V supply; however, a built-in option allows
operation from a 12-V supply without the use of additional components. The output is compatible with most TTL
circuits when either supply voltage is used.
In normal operation, the threshold-control terminals are connected to the V
CC1
terminal, even if power is being
supplied via the alternate V
CC2
terminal. This provides a wide hysteresis loop, which is the difference between
the positive-going and negative-going threshold voltages. See typical characteristics. In this mode of operation,
if the input voltage goes to zero, the output voltage will remain at the low or high level as determined by the
previous input.
For fail-safe operation, the threshold-control terminals are open. This reduces the hysteresis loop by causing
the negative-going threshold voltage to be above zero. The positive-going threshold voltage remains above
zero as it is unaffected by the disposition of the threshold terminals. In the fail-safe mode, if the input voltage
goes to zero or an open-circuit condition, the output will go to the high level regardless of the previous input
condition.
The SN75154 is characterized for operation from 0°C to 70°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
©
1995, Texas Instruments Incorporated
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1
SN75154
QUADRUPLE LINE RECEIVER
SLLS083B – NOVEMBER 1970 – REVISED MAY 1995
logic symbol
†
1A
1T
2A
2T
3A
3T
4A
4T
4
3
5
2
6
1
7
14
THRS ADJ
12
13
logic diagram (positive logic)
1A
1Y
1T
2A
2Y
2T
3A
3Y
3T
4A
4Y
4T
4
3
5
2
6
1
7
14
10
4Y
11
3Y
12
2Y
13
1Y
11
10
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
schematic
Common to Four Receivers
VCC2‡
3.2 kΩ
VCC1
R1
GND
5 kΩ
1 of 4 Receivers
Threshold
Control
5.5 kΩ
5 kΩ
9.9 kΩ
1.6 kΩ
1.6 kΩ
200
Ω
Output
4.2 kΩ
Input
2.7 kΩ
240
Ω
1 kΩ
Component values shown are nominal.
. . . Substrate
‡ When VCC1 is used, VCC2 may be left open or shorted to VCC1. When VCC2 is used, VCC1 must be left open
or connected to the threshold control pins.
2
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SN75154
QUADRUPLE LINE RECEIVER
SLLS083B – NOVEMBER 1970 – REVISED MAY 1995
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Normal supply voltage, V
CC1
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Alternate supply voltage, V
CC2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 V
Input voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
25 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: Voltage values are with respect to network GND terminal.
DISSIPATION RATING TABLE
PACKAGE
D
N
NS
TA
≤
25°C
POWER RATING
950 mW
1150 mW
625 mW
DERATING FACTOR
ABOVE TA = 25°C
7.6 mW/°C
9.2 mW/°C
5.0 mW/°C
TA = 70°C
POWER RATING
608 mW
736 mW
400 mW
recommended operating conditions
MIN
Normal supply voltage, VCC1
Alternate supply voltage, VCC2
High-level input voltage, VIH (see Note 2)
Low-level input voltage, VIL (see Note 2)
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
0
4.5
10.8
3
– 15
NOM
5
12
MAX
5.5
13.2
15
–3
– 400
16
70
UNIT
V
V
V
V
µA
mA
°C
NOTE 2: The algebraic convention, where the less positive (more negative) limit is designated as minimum, is used in this data sheet for logic
and threshold levels only, e.g., when 0 V is the maximum, the minimum limit is a more negative voltage.
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3
SN75154
QUADRUPLE LINE RECEIVER
SLLS083B – NOVEMBER 1970 – REVISED MAY 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIT
IT+
VIT
IT–
Vh
hys
VOH
VOL
Positive-going input
g g
threshold voltage
Negative-going input
g
g g
threshold voltage
Hysteresis voltage
y
g
(VIT+ – VIT–)
High-level output voltage
Low-level output voltage
Normal operation
Fail-safe operation
Normal operation
Fail-safe operation
Normal operation
Fail-safe operation
TEST
FIGURE
1
1
1
1
1
IOH = – 400
µA
IOL = 16 mA
∆V
I = – 25 V to – 14 V
∆V
I = – 14 V to – 3 V
ri
Input resistance
2
∆V
I = – 3 V to 3 V
∆V
I = 3 V to 14 V
∆V
I = 14 V to 25 V
II = 0
VCC1 = 5.5 V,
VCC1 = 5.5 V,
VCC2 = 13.2 V,
VI = – 5 V
TA = 25°C
TA = 25°C
TEST CONDITIONS
MIN
0.8
0.8
–3
0.8
0.8
0
2.4
3
3
3
3
3
0
– 10
TYP†
2.2
2.2
– 1.1
1.4
3.3
0.8
3.5
0.29
5
5
6
5
5
0.2
– 20
20
23
0.4
7
7
8
7
7
2
– 40
35
40
V
mA
mA
kΩ
MAX
3
3
0
3
6
2.2
UNIT
V
V
V
V
V
VI(open)
IOS
Open-circuit input voltage
Short-circuit output current‡
3
4
5
ICC1
Supply current from VCC1
ICC2
Supply current from VCC2
† All typical values are at VCC1 = 5 V, TA = 25°C.
‡ Not more than one output should be shorted at a time.
switching characteristics, V
CC1
= 5 V, T
A
= 25°C, N = 10
PARAMETER
tPLH
tPHL
tTLH
tTHL
Propagation delay time, low- to high-level output
Propagation delay time, high- to low-level output
Transition time, low- to high-level output
Transition time, high- to low-level output
6
CL = 50 pF
pF,
RL = 390
Ω
TEST
FIGURE
TEST CONDITIONS
MIN
TYP
11
8
7
2.2
MAX
UNIT
ns
ns
ns
ns
4
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