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Электронный компонент: AM26C31C

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AM26C31C, AM26C31I, AM26C31M
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS103G DECEMBER 1990 REVISED SEPTEMBER 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Meet or Exceed the Requirements of
TIA/EIA-422-B and ITU Recommendation
V.11
D
Low Power, I
CC
= 100
A Typ
D
Operate 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
description
The AM26C31C, AM26C31I, and AM26C31M are
four complementary-output line drivers 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 function is
common to all four drivers and offers the choice of
an active-high or active-low 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, and the
AM26C31M is characterized for operation from
55
C to 125
C.
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)
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
AM26C31C, AM26C31I . . . D, DB, OR N PACKAGE
AM26C31M . . . J OR W PACKAGE
(TOP VIEW)
AM26C31M . . . FK PACKAGE
(TOP VIEW)
The DB package is only available left-ended taped
(order AM26C31IDBLE or AM26C31CDBLE).
NC No internal connection
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
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
1998, Texas Instruments Incorporated
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.
AM26C31C, AM26C31I, AM26C31M
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS103G DECEMBER 1990 REVISED SEPTEMBER 1998
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbol
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
4A
3A
2A
1A
G
G
13
14
11
10
5
6
3
2
15
9
7
1
12
4
1
EN
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
The terminal numbers shown are for the D, DB, J, N, and W packages.
logic diagram (positive logic)
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
13
14
11
10
5
6
3
2
4A
3A
2A
1A
G
G
15
9
7
1
12
4
schematics of inputs and outputs
Input
VCC
TYPICAL OF ALL OUTPUTS
Output
VCC
GND
GND
EQUIVALENT OF EACH INPUT
AM26C31C, AM26C31I, AM26C31M
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS103G DECEMBER 1990 REVISED SEPTEMBER 1998
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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: All voltage values, except differential output voltage (VOD), are with respect to the network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
TA
25
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
C
TA = 70
C
POWER RATING
TA = 85
C
POWER RATING
TA = 125
C
POWER RATING
D
DB
N
FK
J
W
950 mW
781 mW
1150 mW
1375 mW
1375 mW
1000 mW
7.6 mW/
C
6.2 mW/
C
9.2 mW/
C
11 mW/
C
11 mW/
C
8.0 mW/
C
608 mW
502 mW
736 mW
--
--
--
494 mW
409 mW
598 mW
--
--
--
--
--
--
275 mW
275 mW
200 mW
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC
4.5
5
5.5
V
Differential input voltage, VID
7
V
High-level input voltage, VIH
2
V
Low-level input voltage, VIL
0.8
V
High-level output current, IOH
20
mA
Low-level output current, IOL
20
mA
AM26C31C
0
70
Operating free-air temperature, TA
AM26C31I
40
85
C
AM26C31M
55
125
AM26C31C, AM26C31I, AM26C31M
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS103G DECEMBER 1990 REVISED SEPTEMBER 1998
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
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
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
IO = 0,
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
O
,
See Note 2
I
,
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 2: 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
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|)
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
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
7
16
ns
Cpd
Power dissipation capacitance (each driver) (see
Note 3)
S1 is open,
See Figure 2
170
pF
All typical values are at VCC = 5 V and TA = 25
C.
NOTE 3: Cpd is used to estimate the switching losses according to PD = Cpd
VCC2
f, where f is the switching frequency.
AM26C31C, AM26C31I, AM26C31M
QUADRUPLE DIFFERENTIAL LINE DRIVERS
SLLS103G DECEMBER 1990 REVISED SEPTEMBER 1998
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
AM26C31M
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
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
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
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
ICC
Quiescent supply current
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 2
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 2: 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
AM26C31M
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low- to high-level output
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|)
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
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
7
16
ns
Cpd
Power dissipation capacitance (each driver) (see
Note 3)
S1 is open,
See Figure 2
100
pF
All typical values are at VCC = 5 V and TA = 25
C.
NOTE 3: Cpd is used to estimate the switching losses according to PD = Cpd
VCC2
f, where f is the switching frequency.