AM26C31
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS103I DECEMBER 1990 REVISED FEBRUARY 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
TIA/EIA-422-B and ITU Recommendation
V.11
D
Low Power, I
CC
= 100
A Typ
D
Operates From a Single 5-V Supply
D
High Speed, t
PLH
= t
PHL
= 7 ns Typ
D
Low Pulse Distortion, t
sk(p)
= 0.5 ns Typ
D
High Output Impedance in Power-Off
Conditions
D
Improved Replacement for AM26LS31
D
Available in Q-Temp Automotive
High-Reliability Automotive Applications
Configuration Control/Print Support
Qualification to Automotive Standards
description
The AM26C31 is a differential line driver with
complementary outputs, designed to meet the
requirements of TIA/EIA -422-B and ITU (formerly
CCITT). The 3-state outputs have high-current
capability for driving balanced lines, such as
twisted-pair or parallel-wire transmission lines,
and they provide the high-impedance state in the
power-off condition. The enable functions are
common to all four drivers and offer the choice of
an active-high (G) or active-low (G) enable input.
BiCMOS circuitry reduces power consumption
without sacrificing speed.
The AM26C31C is characterized for operation from 0
C to 70
C, the AM26C31I is characterized for operation
from 40
C to 85
C, the AM26C31Q is characterized for operation over the automotive temperature range of
40
C to 125
C, and the AM26C31M is characterized for operation over the full military temperature range of
55
C to 125
C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
PLASTIC
SMALL OUTLINE
(D, NS)
PLASTIC SHRINK
SMALL OUTLINE
(DB)
PLASTIC
DIP
(N)
CERAMIC
CHIP CARRIER
(FK)
CERAMIC
DIP
(J)
CERAMIC
DUAL
FLATPACK
(W)
0
C to 70
C
AM26C31CD
AM26C31CNS
AM26C31CDB
--
AM26C31CN
--
--
--
--
40
C to 85
C
AM26C31ID
AM26C31INS
AM26C31IDB
--
AM26C31IN
--
--
--
--
40
C to 125
C
AM26C31QD
AM26C31QDB
AM26C31QN
--
--
--
55
C to 125
C
--
--
--
AM26C31MFK
AM26C31MJ
AM26C31MW
The D package also is available taped and reeled. Add the suffix R to device type (e.g., AM26C31CDR). The DB and NS packages are only
available taped and reeled.
Copyright
2002, 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.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1Y
1Z
G
2Z
2Y
2A
GND
V
CC
4A
4Y
4Z
G
3Z
3Y
3A
AM26C31M . . . J OR W PACKAGE
AM26C31C/I/Q . . . D, DB, N, OR NS PACKAGE
(TOP VIEW)
AM26C31M . . . FK PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4Y
4Z
NC
G
3Z
1Z
G
NC
2Z
2Y
1Y
1A
NC
3A
3Y
4A
2A
GND
NC
CC
V
NC No internal connection
AM26C31
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS103I DECEMBER 1990 REVISED FEBRUARY 2002
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
(each driver)
INPUT
ENABLES
OUTPUTS
A
G
G
Y
Z
H
H
X
H
L
L
H
X
L
H
H
X
L
H
L
L
X
L
L
H
X
L
H
Z
Z
H = High level, L = Low level, X = Irrelevant,
Z = High impedance (off)
logic diagram (positive logic)
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
4A
3A
2A
1A
G
G
2
3
6
5
10
11
14
13
4
12
1
7
9
15
schematics of inputs and outputs
Input
VCC
TYPICAL OF ALL OUTPUTS
Output
VCC
GND
GND
EQUIVALENT OF EACH INPUT
AM26C31
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS103I DECEMBER 1990 REVISED FEBRUARY 2002
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
(see Note 1)
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage range, V
ID
14 V to 14 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input or output clamp current, I
IK
or I
OK
20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, I
O
150 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
CC
current
200 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GND current
200 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 2): D package
73
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB package
82
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
64
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C
to 150
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. All voltage values, except differential output voltage (VOD), are with respect to the network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
DISSIPATION RATING TABLE
PACKAGE
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA = 125
C
POWER RATING
FK
1375 mW
11 mW/
C
275 mW
J
1375 mW
11 mW/
C
275 mW
W
1000 mW
8.0 mW/
C
200 mW
recommended operating conditions
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
V
VID
Differential input voltage
7
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
20
V
IOL
Low-level output current
20
V
AM26C31C
0
70
TA
Operating free air temperature
AM26C31I
40
85
C
TA
Operating free-air temperature
AM26C31Q
40
125
C
AM26C31M
55
125
AM26C31
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS103I DECEMBER 1990 REVISED FEBRUARY 2002
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AM26C31C
AM26C31I
UNIT
MIN
TYP
MAX
VOH
High-level output voltage
IO = 20 mA
2.4
3.4
V
VOL
Low-level output voltage
IO = 20 mA
0.2
0.4
V
|VOD|
Differential output voltage magnitude
RL = 100
,
See Figure 1
2
3.1
V
|VOD|
Change in magnitude of differential output voltage
RL = 100
,
See Figure 1
0.4
V
VOC
Common-mode output voltage
RL = 100
,
See Figure 1
3
V
|VOC|
Change in magnitude of common-mode output voltage
RL = 100
,
See Figure 1
0.4
V
II
Input current
VI = VCC or GND
1
A
IO( ff)
Driver output current with power off
VCC = 0
VO = 6 V
100
A
IO(off)
Driver output current with power off
VCC = 0
VO = 0.25 V
100
A
IOS
Driver output short-circuit current
VO = 0
30
150
mA
IOZ
High impedance off state output current
VO = 2.5 V
20
A
IOZ
High-impedance off-state output current
VO = 0.5 V
20
A
VI = 0 V or 5 V
100
A
ICC
Quiescent supply current
IO = 0
VI = 2.4 V
or 0 5 V
1 5
3
mA
or 0.5 V,
See Note 3
1.5
3
mA
Ci
Input capacitance
6
pF
All typical values are at VCC = 5 V and TA = 25
C.
|VOD| and
|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low
level.
NOTE 3: This parameter is measured per input. All other inputs are at 0 or 5 V.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AM26C31C
AM26C31I
UNIT
MIN
TYP
MAX
tPLH
Propagation delay time, low- to high-level output
S1 is open,
See Figure 2
3
7
12
ns
tPHL
Propagation delay time, high- to low-level output
S1 is open,
See Figure 2
3
7
12
ns
tsk(p)
Pulse skew time (|tPLH tPHL|)
S1 is open,
See Figure 2
0.5
4
ns
tr(OD), tf(OD) Differential output rise and fall times
S1 is open,
See Figure 3
5
10
ns
tPZH
Output enable time to high level
S1 is closed,
See Figure 4
10
19
ns
tPZL
Output enable time to low level
S1 is closed,
See Figure 4
10
19
ns
tPHZ
Output disable time from high level
S1 is closed,
See Figure 4
7
16
ns
tPLZ
Output disable time from low level
S1 is closed,
See Figure 4
7
16
ns
Cpd
Power dissipation capacitance (each driver)
(see Note 4)
S1 is open,
See Figure 2
170
pF
All typical values are at VCC = 5 V and TA = 25
C.
NOTE 4: Cpd is used to estimate the switching losses according to PD = Cpd
VCC2
f, where f is the switching frequency.
AM26C31
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS103I DECEMBER 1990 REVISED FEBRUARY 2002
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AM26C31Q
AM26C31M
UNIT
MIN
TYP
MAX
VOH
High-level output voltage
IO = 20 mA
2.2
3.4
V
VOL
Low-level output voltage
IO = 20 mA
0.2
0.4
V
|VOD|
Differential output voltage magnitude
RL = 100
,
See Figure 1
2
3.1
V
|VOD|
Change in magnitude of differential output voltage
RL = 100
,
See Figure 1
0.4
V
VOC
Common-mode output voltage
RL = 100
,
See Figure 1
3
V
|VOC|
Change in magnitude of common-mode output voltage
RL = 100
,
See Figure 1
0.4
V
II
Input current
VI = VCC or GND
1
A
IO( ff)
Driver output current with power off
VCC = 0
VO = 6 V
100
A
IO(off)
Driver output current with power off
VCC = 0
VO = 0.25 V
100
A
IOS
Driver output short-circuit current
VO = 0
170
mA
IOZ
High impedance off state output current
VO = 2.5 V
20
A
IOZ
High-impedance off-state output current
VO = 0.5 V
20
A
IO = 0
VI = 0 V or 5 V
100
A
ICC
Quiescent supply current
IO = 0
VI = 2.4 V
or 0.5 V,
See Note 3
3.2
mA
Ci
Input capacitance
6
pF
All typical values are at VCC = 5 V and TA = 25
C.
|VOD| and
|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low
level.
NOTE 3: This parameter is measured per input. All other inputs are at 0 V or 5 V.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
AM26C31Q
AM26C31M
UNIT
MIN
TYP
MAX
tPLH
Propagation delay time, low- to high-level output
S1 is open,
See Figure 2
7
12
ns
tPHL
Propagation delay time, high- to low-level output
S1 is open,
See Figure 2
6.5
12
ns
tsk(p)
Pulse skew time (|tPLH tPHL|)
S1 is open,
See Figure 2
0.5
4
ns
tr(OD), tf(OD) Differential output rise and fall times
S1 is open,
See Figure 3
5
12
ns
tPZH
Output enable time to high level
S1 is closed,
See Figure 4
10
19
ns
tPZL
Output enable time to low level
S1 is closed,
See Figure 4
10
19
ns
tPHZ
Output disable time from high level
S1 is closed,
See Figure 4
7
16
ns
tPLZ
Output disable time from low level
S1 is closed,
See Figure 4
7
16
ns
Cpd
Power dissipation capacitance (each driver)
(see Note 4)
S1 is open,
See Figure 2
100
pF
All typical values are at VCC = 5 V and TA = 25
C.
NOTE 4: Cpd is used to estimate the switching losses according to PD = Cpd
VCC2
f, where f is the switching frequency.
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