SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D JANUARY 1977 REVISED APRIL 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
High Speed
D
Standard Supply Voltage
D
Dual Channels
D
High Common-Mode Rejection Ratio
D
High Input Impedance
D
High Input Sensitivity
D
Differential Common-Mode Input Voltage
Range of
3 V
D
Strobe Inputs for Receiver Selection
D
Gate Inputs for Logic Versatility
D
TTL Drive Capability
D
High dc Noise Margin
D
Totem-Pole Outputs
D
B Version Has Diode-Protected Input for
Power-Off Condition
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.
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
Input
B 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.
Copyright
1998, Texas Instruments Incorporated
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.
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.
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 . . . J OR W PACKAGE
SN75107A, SN75107B, SN75108A . . . D OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2A
NC
2B
NC
NC
NC
NC
1Y
NC
1G
SN55107A . . . FK PACKAGE
(TOP VIEW)
1B
1A
NC
2Y
S
GND
NC
NC No internal connection
CC +
V
2G
CC
V
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D JANUARY 1977 REVISED APRIL 1998
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
DIFFERENTIAL INPUTS
STROBES
OUTPUT
A B
G
S
Y
VID
25 mV
X
X
H
X
L
H
25 mV
<
VID
<
25 mV
L
X
H
H
H
Indeterminate
X
L
H
VID
25 mV
L
X
H
H
H
L
H = high level, L = low level, X = irrelevant
logic symbol
2G
2B
2A
1G
1B
1A
S
8
11
12
5
2
6
2Y
1Y
9
4
&
EN
SN75108A
1
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.
2G
2B
2A
1G
1B
1A
S
8
11
12
5
2
1
6
2Y
1Y
9
4
&
EN
SN55107A, SN75107A, and SN75107B
logic diagram (positive logic)
2B
2A
2G
1G
1B
1A
S
11
12
8
5
2
1
6
2Y
1Y
9
4
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D JANUARY 1977 REVISED APRIL 1998
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematic (each receiver)
13
2, 11
14
1, 12
See
Note 2
To Other Receiver
Output Y
GND
Strobe G
Strobe S
4, 9
7
5, 8
6
800
Common
to Both
Receivers
1 k
1 k
400
4 k
1.6 k
120
4.8 k
760
R
4.25 k
3 k
3 k
VCC +
A
B
Inputs
VCC
Pin numbers shown are for D, J, N, and W packages.
R = 1 k
for '107A and SN75107B, 750
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.
See
Note 2
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D JANUARY 1977 REVISED APRIL 1998
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA = 70
C
POWER RATING
TA = 125
C
POWER RATING
D
950 mW
7.6 mW/
C
608 mW
--
FK
1375 mW
11.0 mW/
C
880 mW
275 mW
J
1375 mW
11.0 mW/
C
880 mW
275 mW
N
1150 mW
9.2 mW/
C
736 mW
--
W
1000 mW
8.0 mW/
C
640 mW
200 mW
recommended operating conditions (see Note 6)
SN55107A
SN75107A, SN75107B,
SN55107A
,
,
SN75108A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
Supply voltage, VCC +
4.5
5
5.5
4.75
5
5.25
V
Supply voltage, VCC
4.5
5
5.5
4.75
5
5.25
V
High-level input voltage between differential inputs, VIDH (see Note 7)
0.025
5
0.025
5
V
Low-level input voltage between differential inputs, VIDL (see Note 7)
5
0.025
5
0.025
V
Common-mode input voltage, VIC (see Notes 7 and 8)
3
3
3
3
V
Input voltage, any differential input to GND (see Note 8)
5
3
5
3
V
High-level input voltage at strobe inputs, VIH(S)
2
5.5
2
5.5
V
Low-level input voltage at strobe inputs, VIL(S)
0
0.8
0
0.8
V
Low-level output current, IOL
16
16
mA
Operating free-air temperature, TA
55
125
0
70
C
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.
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D JANUARY 1977 REVISED APRIL 1998
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1
3
4
5
5
4
3
2
1
0
Input
A
to GND V
oltage
V
1
2
Input B to GND Voltage V
RECOMMENDED COMBINATIONS
OF INPUT VOLTAGES
3
1
2
3
0
2
NOTE A: Recommended input-voltage combinations are in the shaded area.
Figure 1. Recommended Combinations of Input Voltages
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