Motorola Corp MC3487D

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Item Description: QUADRUPLE DIFF LINE DRIVER

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MC3487
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS098A – MAY 1980 – REVISED MAY 1995
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Meets or Exceeds Requirements of ANSI
EIA/TIA-422-B and ITU
Recommendation V.11
3-State, TTL-Compatible Outputs
Fast Transition Times
High-Impedance Inputs
Single 5-V Supply
Power-Up and Power-Down Protection
Designed to Be Interchangeable With
Motorola MC3487
description
The MC3487 offers four independent differential line drivers designed to meet the specifications of ANSI
EIA/TIA-422-B and ITU Recommendation V.11. Each driver has a TTL-compatible input buffered to reduce
current and minimize loading.
The driver outputs utilize 3-state circuitry to provide high-impedance states at any pair of differential outputs
when the appropriate output enable is at a low logic level. Internal circuitry is provided to ensure a
high-impedance state at the differential outputs during power-up and power-down transition times provided the
output enable is low. The outputs are capable of source or sink currents of 48 mA.
The MC3487 is designed for optimum performance when used with the MC3486 quadruple line receiver. It is
supplied in a 16-pin dual-in-line package and operates from a single 5-V supply.
The MC3487 is characterized for operation from 0°C to 70°C.
logic symbol
EN
EN
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
15
9
12
7
1
4
4A
3A
3,4EN
2A
1A
1,2EN
13
14
11
10
5
6
3
2
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
4Z
4Y
3Z
3Y
2Z
2Y
1Z
1Y
15
9
12
7
1
4
4A
3A
3,4EN
2A
1A
1,2EN
13
14
11
10
5
6
3
2
Copyright 1995, 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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1Y
1Z
1,2EN
2Z
2Y
2A
GND
V
CC
4A
4Y
4Z
3,4EN
3Z
3Y
3A
D OR N PACKAGE
(TOP VIEW)
MC3487
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS098A – MAY 1980 – REVISED MAY 1995
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
FUNCTION TABLE
(each driver)
INPUT
OUTPUT
OUTPUTS
INPUT
ENABLE
Y Z
H H H L
L H L H
X L Z Z
H = TTL high level, L = TTL low level,
X = irrelevant, Z = High impedance
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
V
CC
Input
V
CC
9 NOM
Output
TYPICAL OF ALL OUTPUTS
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(see Note 1) 8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, V
O
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or N 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.
NOTE 1: All voltage values, except differential output voltage, V
OD
, are with respect to the network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
T
A
25°C DERATING FACTOR T
A
= 70°C
PACKAGE
A
POWER RATING ABOVE T
A
= 25°C
A
POWER RATING
D 950 mW 7.6 mW/°C 608 mW
N 1150 mW 9.2 mW/°C 736 mW
MC3487
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS098A – MAY 1980 – REVISED MAY 1995
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
CC
4.75 5 5.25 V
High-level input voltage, V
IH
2 V
Low-level input voltage, V
IL
0.8 V
Operating free-air temperature, T
A
0 70 °C
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN MAX UNIT
V
IK
Input clamp voltage I
I
= –18 mA 1.5 V
V
OH
High-level output voltage V
IL
= 0.8 V, V
IH
= 2 V, I
OH
= –20 mA 2.5 V
V
OL
Low-level output voltage V
IL
= 0.8 V, V
IH
= 2 V, I
OL
= 48 mA 0.5 V
|V
OD
| Differential output voltage R
L
= 100 , See Figure 1 2
|V
OD
|
Change in magnitude of
R
L
= 100
±04
V
|V
OD
|
gg
differential output voltage
R
L
=
100
,
u
±0
.
4
V
V
OC
Common-mode output voltage
R
L
= 100 , See Figure 1 3 V
|V
OC
|
Change in magnitude of
R
L
= 100
±04
V
|V
OC
|
gg
common-mode output voltage
R
L
=
100
,
u
±0
.
4
V
I
O
Out
p
ut current with
p
ower off
V
CC
=0
V
O
= 6 V 100
µA
I
O
O
u
tp
u
t
c
u
rrent
w
ith
po
w
er
off
V
CC
=
0
V
O
= –0.25 V 100
µ
A
I
OZ
High im
p
edance state out
p
ut current
Out
p
ut enables at 0 8 V
V
O
= 2.7 V 100
µA
I
OZ
High
-
impedance
-
state
o
u
tp
u
t
c
u
rrent
O
u
tp
u
t
enables
at
0
.
8
V
V
O
= 0.5 V 100
µ
A
I
I
Input current at maximum input volt-
age
V
I
= 5.5 V 100 µA
I
IH
High-level input current V
I
= 2.7 V 50 µA
I
IL
Low-level input current V
I
= 0.5 V 400 µA
I
OS
Short-circuit output current
§
V
I
= 2 V –40 140 mA
I
CC
Su
pp
ly current (all drivers)
Outputs disabled 105
mA
I
CC
S
u
ppl
y
c
u
rrent
(all
dri
v
ers)
Outputs enabled, No load 85
mA
|V
OD
| and |V
OC
| are the changes in magnitude of V
OD
and V
OC
, respectively, that occur when the input is changed from a high level to a low
level.
In ANSI Standard EIA/TIA-422-B, V
OC
, which is the average of the two output voltages with respect to ground, is called output offset voltage,
V
OS
.
§
Only one output at a time should be shorted, and duration of the short circuit should not exceed one second.
switching characteristics over recommended operating free-air temperature range , V
CC
= 5 V
PARAMETER TEST CONDITIONS MIN MAX UNIT
t
PLH
Propagation delay time, low- to high-level output 20 ns
t
PHL
Propagation delay time, high- to low-level output C
L
= 15 pF, See Figure 2 20 ns
Skew time 6 ns
t
t(OD)
Differential-output transition time C
L
= 15 pF, See Figure 3 20 ns
t
PZH
Output enable time to high level 30 ns
t
PZL
Output enable time to low level
C
L
=50
p
F See Figure 4
30 ns
t
PHZ
Output disable time from high level
C
L
=
50
F
,
See
Figure
4
25 ns
t
PLZ
Output disable time from low level 30 ns
12NEXT

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