SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
D
D
D
D
D
D
D
D
D
D
D
D
D
High Speed
Standard Supply Voltage
Dual Channels
High Common-Mode Rejection Ratio
High Input Impedance
High Input Sensitivity
Differential Common-Mode Input Voltage
Range of
±
3 V
Strobe Inputs for Receiver Selection
Gate Inputs for Logic Versatility
TTL Drive Capability
High dc Noise Margin
Totem-Pole Outputs
B Version Has Diode-Protected Input for
Power-Off Condition
SN55107A . . . J OR W PACKAGE
SN75107A, SN75107B, SN75108A . . . D OR N PACKAGE
(TOP VIEW)
1A
1B
NC
1Y
1G
S
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC +
V
CC –
2A
2B
NC
2Y
2G
SN55107A . . . FK PACKAGE
(TOP VIEW)
description
These circuits are TTL-compatible, high-speed
line receivers. Each is a monolithic dual circuit
featuring two independent channels. They are
designed for general use, as well as for such
specific applications as data comparators and
balanced, unbalanced, and party-line transmis-
sion systems. These devices are unilaterally
interchangeable with and are replacements for
the SN55107, SN75107, and SN75108, but offer
diode-clamped strobe inputs to simplify circuit
design.
NC
NC
1Y
NC
1G
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
1B
1A
NC
VCC +
VCC –
2A
NC
2B
NC
NC
NC – No internal connection
Input
B Version
Copyright
©
1998, Texas Instruments Incorporated
The essential difference between the A and B versions can be seen in the schematics. Input-protection diodes
are in series with the collectors of the differential-input transistors of the B versions. These diodes are useful
in certain party-line systems that have multiple V
CC +
power supplies and can be operated with some of the V
CC +
supplies turned off. In such a system, if a supply is turned off and allowed to go to ground, the equivalent input
circuit connected to that supply would be as follows:
Input
A Version
This would be a problem in specific systems that might have the transmission lines biased to some potential
greater than 1.4 V.
The SN55107A is characterized for operation over the full military temperature range of – 55°C to 125°C. The
SN75107A, SN75107B, and SN75108A are 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.
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S
GND
NC
2G
2Y
1
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
FUNCTION TABLE
DIFFERENTIAL INPUTS
A–B
VID
≥
25 mV
– 25 mV
<
VID
<
25 mV
STROBES
G
X
X
L
H
X
VID
≤
– 25 mV
L
H
H = high level, L = low level, X = irrelevant
S
X
L
X
H
L
X
H
OUTPUT
Y
H
H
H
Indeterminate
H
H
L
logic symbol
†
SN55107A, SN75107A, and SN75107B
S
1A
1B
1G
2A
2B
2G
6
1
2
5
12
11
8
9
2Y
EN
S
6
1
2
5
12
11
8
9
2Y
EN
SN75108A
&
4
1A
1Y
1B
1G
2A
2B
2G
&
4
1Y
† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, N, and W packages.
logic diagram (positive logic)
S
1A
1B
1G
2G
2A
2B
6
1
2
5
8
12
11
9
2Y
4
1Y
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
schematic (each receiver)
14
1 kΩ
See
Note 2
400
Ω
1 kΩ
4 kΩ
1.6 kΩ
See
Note 2
120
Ω
VCC +
4.8 kΩ
800
Ω
4, 9
Output Y
A
Inputs
B
1, 12
760
Ω
R†
7
GND
2, 11
5, 8
Strobe G
4.25 kΩ
3 kΩ
3 kΩ
Common
to Both
Receivers
VCC –
13
6
Strobe S
To Other Receiver
Pin numbers shown are for D, J, N, and W packages.
† R = 1 kΩ for ’107A and SN75107B, 750
Ω
for SN75108A.
NOTES: 1. Resistor values shown are nominal.
2. Components shown with dashed lines in the output circuitry are applicable to the ’107A and SN75107B only. Diodes in series with
the collectors of the differential input transistors are short circuited on ’107A and SN75108A.
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3
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply voltage, V
CC +
(see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Supply voltage, V
CC –
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 7 V
Differential input voltage, V
ID
(see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
6 V
Common-mode input voltage, V
IC
(see Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
5 V
Strobe input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature for 60 seconds, T
c
: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package . . . . . . . . . . . . . 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.
NOTES: 3. All voltage values, except differential voltages, are with respect to network ground terminal.
4. Differential voltage values are at the noninverting (A) terminal with respect to the inverting (B) terminal.
5. Common-mode input voltage is the average of the voltages at the A and B inputs.
DISSIPATION RATING TABLE
PACKAGE
D
FK
J
N
W
TA
≤
25°C
POWER RATING
950 mW
1375 mW
1375 mW
1150 mW
1000 mW
DERATING FACTOR
ABOVE TA = 25°C
7.6 mW/°C
11.0 mW/°C
11.0 mW/°C
9.2 mW/°C
8.0 mW/°C
TA = 70°C
POWER RATING
608 mW
880 mW
880 mW
736 mW
640 mW
TA = 125°C
POWER RATING
—
275 mW
275 mW
—
200 mW
recommended operating conditions (see Note 6)
SN55107A
MIN
Supply voltage, VCC +
Supply voltage, VCC –
High-level input voltage between differential inputs, VIDH (see Note 7)
Low-level input voltage between differential inputs, VIDL (see Note 7)
Common-mode input voltage, VIC (see Notes 7 and 8)
Input voltage, any differential input to GND (see Note 8)
High-level input voltage at strobe inputs, VIH(S)
Low-level input voltage at strobe inputs, VIL(S)
Low-level output current, IOL
Operating free-air temperature, TA
– 55
4.5
– 4.5
0.025
–5‡
–3‡
–5‡
2
0
NOM
5
–5
MAX
5.5
– 5.5
5
– 0.025
3
3
5.5
0.8
– 16
125
0
SN75107A, SN75107B,
,
,
SN75108A
MIN
4.75
– 4.75
0.025
–5‡
–3‡
–5‡
2
0
NOM
5
–5
MAX
5.25
– 5.25
5
– 0.025
3
3
5.5
0.8
– 16
70
V
V
V
V
V
V
V
V
mA
°C
UNIT
‡ The algebraic convention, in which the less positive (more negative) limit is designated as minimum, is used in this data sheet for input voltage
levels only.
NOTES: 6. When using only one channel of the line receiver, the strobe input (G) of the unused channel should be grounded and at least one
of the differential inputs of the unused receiver should be terminated at some voltage between – 3 V and 3 V.
7. The recommended combinations of input voltages fall within the shaded area in Figure 1.
8. The common-mode voltage may be as low as – 4 V provided that the more positive of the two inputs is not more negative than
– 3 V.
4
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DALLAS, TEXAS 75265
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
RECOMMENDED COMBINATIONS
OF INPUT VOLTAGES
3
2
Input A to GND Voltage – V
1
0
–1
–2
–3
–4
–5
–5
–4
–3
–2
–1
0
1
2
3
Input B to GND Voltage – V
NOTE A: Recommended input-voltage combinations are in the shaded area.
Figure 1. Recommended Combinations of Input Voltages
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