SN55109A, SN55110A
SN75109A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106B DECEMBER 1975 REVISED MAY 1995
Copyright
1995, Texas Instruments Incorporated
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Improved Stability Over Supply Voltage and
Temperature Ranges
Constant-Current Outputs
High Speed
Standard Supply Voltages
High Output Impedance
High Common-Mode Output Voltage Range
3 V to 10 V
TTL-Input Compatibility
Inhibitor Available for Driver Selection
Glitch-Free During Power Up/Power Down
SN75112 and External Circuit Meets or
Exceeds the Requirements of CCITT
Recommendation V.35
description
The SN55109A, SN55110A, SN75109A,
SN75110A, and SN75112 dual line drivers have
improved output current regulation with supply
voltage and temperature variations. In addition,
the higher current of the SN75112 (27 mA) allows
data to be transmitted over longer lines. These
drivers offer optimum performance when used
with the SN55107A, SN55108A, SN75107A, and
SN75108A line receivers.
These drivers feature independent channels with
common voltage supply and ground terminals.
The significant difference between the three
drivers is in the output current specification. The driver circuits feature a constant output current that is switched
to either of two output terminals by the appropriate logic levels at the input terminals. The output current can
be switched off (inhibited) by low logic levels on the enable inputs. The output current is nominally 6 mA for the
'109A, 12 mA for the '110A, and 27 mA for the SN75112.
The enable/inhibit feature is provided so the circuits can be used in party-line or data-bus applications. A strobe
or inhibitor (enable D), common to both drivers, is included for increased driver-logic versatility. The output
current in the inhibited mode, I
O(off)
, is specified so that minimum line loading is induced when the driver is used
in a party-line system with other drivers. The output impedance of the driver in the inhibited mode is very high.
The output impedance of a transistor is biased to cutoff.
AVAILABLE OPTIONS
PACKAGED DEVICES
CERAMIC
TA
SMALL OUTLINE
(D)
CHIP CARRIER
(FK)
CERAMIC DIP
(J)
PLASTIC DIP
(N)
FLATPACK
(W)
SN75109AD
SN75109AN
0
C to 70
C
SN75109AD
SN75110AD
SN75109AN
SN75110AN
SN75112D
SN75112N
SN55109AFK
SN55109AJ
SN55109AJ
SN55109AW
55
C to 125
C
SN55109AFK
SN55110AFK
SN55109AJ
SN55110AJ
SN55109AJ
SN55110AJ
SN55109AW
SN55110AW
55 C to 125 C
SN55110AFK
SN55110AJ
SN55110AJ
SN55110AW
The D package is available taped and reeled. Add the suffix R to the device type, (e.g., SN75110ADR).
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
1C
2C
2A
2B
GND
V
CC+
1Y
1Z
V
CC
D
2Z
2Y
SN55109A, SN55110A . . . J OR W PACKAGE
SN75109A, SN75110A, SN75112 . . . 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
1Z
NC
V
CC
NC
D
1C
NC
2C
NC
2A
SN55109A, SN55110A . . . FK PACKAGE
(TOP VIEW)
1B
1A
NC
2Z
1Y
2B
GND
NC
NC No internal connection
CC+
V
2Y
THE SN75109A IS NOT
RECOMMENDED FOR NEW DESIGNS
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.
SN55109A, SN55110A
SN75109A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106B DECEMBER 1975 REVISED MAY 1995
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The driver outputs have a common-mode voltage range of 3 V to 10 V, allowing common-mode voltage on
the line without affecting driver performance.
All inputs are diode clamped and are designed to satisfy TTL-system requirements. The inputs are tested at
2 V for high-logic-level input conditions and 0.8 V for low-logic-level input conditions. These tests ensure
400-mV noise margin when interfaced with TTL Series 54/74.
The SN55109A and SN55110A are characterized for operation over the full military temperature range of 55
C
to 125
C. The SN75109A, SN75110A, and SN75112 are characterized for operation from 0
C to 70
C.
FUNCTION TABLE
(each driver)
LOGIC
INPUTS
ENABLE
INPUTS
OUTPUTS
A
B
C
D
Y
Z
X
X
L
X
Off
Off
X
X
X
L
Off
Off
L
X
H
H
On
Off
X
L
H
H
On
Off
H
H
H
H
Off
On
H = high level, L = low level, X = irrelevant
When using only one channel of the line drivers, the other
channel should be inhibited and/or have its outputs
grounded.
SN55109A, SN55110A
SN75109A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106B DECEMBER 1975 REVISED MAY 1995
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematic (each driver)
+
+
+
14
To Other Driver
8, 13
Y
Z
9, 12
GND
7
B
A 1, 5
2, 6
+
... VCC + bus
... VCC bus
To Other
Driver
C
D
2.2 k
NOM
VCC
11
Common to Both Drivers
2.2 k
NOM
VCC +
3, 4
10
Pin numbers shown are for D, J, N, and W packages.
SN55109A, SN55110A
SN75109A, SN75110A, SN75112
DUAL LINE DRIVERS
SLLS106B DECEMBER 1975 REVISED MAY 1995
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
SN55109A
SN55110A
SN75109A
SN75110A
SN75112
UNIT
Supply voltage, VCC + (see Note 1)
7
7
7
V
Supply voltage, VCC
7
7
7
V
Input voltage, VI
5.5
5.5
5.5
V
Output voltage range, VO
5 to 12
5 to 12
5 to 12
V
Continuous total power dissipation (see Note 2)
See Dissipation Rating Table
Operating free-air temperature range, TA
55 to 125
0 to 70
0 to 70
C
Storage temperature range, Tstg
65 to 150
65 to 150
65 to 150
C
Case temperature for 60 seconds: FK package
260
C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
J or W package
300
C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
D or N package
260
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:
1. Voltage values are with respect to network ground terminal.
2. In the FK, J, or W package, SN55109A and SN55110A chips are either silver glass or alloy mounted, and SN75109A, SN75110A,
and SN75112 chips are glass mounted.
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 3)
SN55109A
SN75109A
SN55109A
SN55110A
SN75109A
SN75110A
UNIT
SN55110A
SN75112
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
Positive common-mode output voltage
0
10
0
10
V
Negative common-mode output voltage
0
3
0
3
V
High-level input voltage, VIH
2
2
V
Low-level output current, VIL
0.8
0.8
V
Operating free-air temperature, TA
55
125
0
70
C
NOTE 3: When using only one channel of the line drivers, the other channel should be inhibited and/or have its outputs grounded.
SN55109A, SN551
10A
SN75109A, SN751
10A, SN751
12
DUAL
LINE DRIVERS
SLLS106B DECEMBR 1975 REVISED MA
Y
1995
POST
OFFICE BOX 655303 DALLAS,
TEXAS
75265
25
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
SN55109A
SN55110A
SN75112
PARAMETER
TEST CONDITIONS
SN75109A
SN75110A
SN75112
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
VIK
Input clamp voltage
VCC
= MIN,
IL = 12 mA
0.9
1.5
0.9
1.5
0.9
1.5
V
VCC
= MAX, VO = 10 V
6
7
12
15
27
36
IO( )
On state output current
VCC = MIN to MAX,
VO
1 V to 1 V
24
28
32
mA
IO(on)
On-state output current
VO = 1 V to 1 V,
TA = 25
C
24
28
32
mA
VCC
= MIN,
VO = 3 V
3.5
6
6.5
12
18
27
IO(off)
Off-state output current
VCC
= MIN,
VO = 10 V
100
100
100
A
II
Input current at maximum
A, B, or C inputs
VCC
= MAX
VI = 5 5 V
1
1
1
mA
II
input voltage
D input
VCC
= MAX, VI = 5.5 V
2
2
2
mA
IIH
High level input current
A, B, or C inputs
VCC
= MAX
VI = 2 4 V
40
40
40
A
IIH
High-level input current
D input
VCC
= MAX, VI = 2.4 V
80
80
80
A
IIL
Low level input current
A, B, or C inputs
VCC
= MAX
VI = 0 4 V
3
3
3
mA
IIL
Low-level input current
D input
VCC
= MAX, VI = 0.4 V
6
6
6
mA
ICC + (on)
Supply current from VCC + with driver enabled
VCC
= MAX,
A and B inputs at 0 4 V
18
30
23
35
25
40
mA
ICC ( )
Supply current from VCC with driver enabled
A and B in uts at 0.4 V,
C and D inputs at 2 V
18
30
34
50
65
100
mA
ICC (on)
Supply current from VCC with driver enabled
C and D inputs at 2 V
18
30
34
50
65
100
ICC + (off)
Supply current from VCC with driver inhibited
VCC
= MAX,
18
21
30
mA
ICC (off)
Supply current from VCC
with driver inhibited
CC
A, B, C, and D inputs at 0.4 V
10
17
32
mA
For conditions shown as MIN or MAX, use appropriate value specified under recommended operating conditions.
All typical values are at VCC+ = 5 V, VCC = 5 V, TA = 25
C.
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