SN65LBC180A, SN75LBC180A
LOW POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS378C - MAY 2000 - REVISED JUNE 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
High-Speed Low-Power LinBICMOS
Circuitry Designed for Signaling Rates
of
up to 30 Mbps
D
Bus-Pin ESD Protection Exceeds 12 kV
HBM
D
Very Low Disabled Supply-Current
Requirements . . . 700
A Maximum
D
Designed for High-Speed Multipoint Data
Transmission Over Long Cables
D
Common-Mode Voltage Range of
-7 V to 12 V
D
Low Supply Current . . . 15 mA Max
D
Compatible With ANSI Standard
TIA/EIA-485-A and ISO 8482:1987(E)
D
Positive and Negative Output Current
Limiting
D
Driver Thermal Shutdown Protection
description
The SN65LBC180A and SN75LBC180A
differential driver and receiver pairs are monolithic
integrated circuits designed for bidirectional data
communication over long cables that take on the
characteristics of transmission lines. They are
balanced, or differential, voltage mode devices
that are compatible with ANSI standard
TIA/EIA-485-A and ISO 8482:1987(E). The A
version offers improved switching performance
over its predecessors without sacrificing
significantly more power.
These devices combine a differential line driver and differential input line receiver and operate from a single 5-V
power supply. The driver differential outputs and the receiver differential inputs are connected to separate
terminals for full-duplex operation and are designed to present minimum loading to the bus when powered off
(V
CC
= 0). These parts feature wide positive and negative common-mode voltage ranges, making them suitable
for point-to-point or multipoint data bus applications. The devices also provide positive and negative current
limiting for protection from line fault conditions. The SN65LBC180A is characterized for operation from - 40
C
to 85
C, and the SN75LBC180A is characterized for operation from 0
C to 70
C.
Signaling rate by TIA/EIA-485-A definition restrict transition times to 30% of the bit duration, and much higher signaling rates may be achieved
without this requirement as displayed in the TYPICAL CHARACTERISTICS of this device.
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.
NC - No internal connection
INPUT
D
H
L
X
Open
ENABLE
DE
H
H
L
H
OUTPUTS
Y Z
H L
L H
Z Z
H L
DRIVER
DIFFERENTIAL INPUTS
A - B
VID
0.2 V
- 0.2 V < VID < 0.2 V
VID
- 0.2 V
X
Open circuit
ENABLE
RE
L
L
L
H
L
OUTPUT
R
H
?
L
Z
H
RECEIVER
H = high level, L = low level, ? = indeterminate, X = irrelevant,
Z = high impedance (off)
Function Tables
1
2
3
4
5
6
7
14
13
12
11
10
9
8
NC
R
RE
DE
D
GND
GND
V
CC
V
CC
A
B
Z
Y
NC
SN65LBC180AD (Marked as BL180A)
SN65LBC180AN (Marked as 65LBC180A)
SN75LBC180AD (Marked as LB180A)
SN75LBC180AN (Marked as 75LBC180A)
(TOP VIEW)
LinBiCMOS is a trademark of Texas Instruments.
SN65LBC180A, SN75LBC180A
LOW POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS378C - MAY 2000 - REVISED JUNE 2002
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbol
EN2
EN1
B
A
Z
Y
R
RE
D
DE
11
12
10
9
2
3
5
4
2
1
1
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
R
RE
DE
D
B
A
Z
Y
11
12
10
9
2
3
4
5
AVAILABLE OPTIONS
PACKAGE
TA
SMALL OUTLINE
(D)
PLASTIC
DUAL-IN-LINE
(N)
0
C to 70
C
SN75LBC180AD
SN75LBC180AN
- 40
C to 85
C
SN65LBC180AD
SN65LBC180AN
The D package is available taped and reeled. Add an R suffix to the part
number (i.e., SN65LBC180ADR).
SN65LBC180A, SN75LBC180A
LOW POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS378C - MAY 2000 - REVISED JUNE 2002
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematics of inputs and outputs
Input
100 k
4 k
18 k
4 k
16 V
16 V
Input
100 k
4 k
18 k
4 k
16 V
16 V
VCC
VCC
Output
VCC
A Input
B Input
R Output
40
8 V
1 k
8 V
Input
VCC
D, DE, and RE Inputs
100 k
16 V
16 V
Output
VCC
Y AND Z Outputs
SN65LBC180A, SN75LBC180A
LOW POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS378C - MAY 2000 - REVISED JUNE 2002
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings
Supply voltage range, V
CC
(see Note 1)
-0.3 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(A, B)
-10 V to 15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range at
D, R, DE, RE
-0.3 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation (see Note 2)
Internally limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrostatic discharge: Bus terminals and GND, Class 3, A: (see Note 3)
12 kV
. . . . . . . . . . . . . . . . . . . . . . . .
Bus terminals and GND, Class 3, B: (see Note 3)
400 V
. . . . . . . . . . . . . . . . . . . . . . . .
All terminals, Class 3, A:
3 kV
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All terminals, Class 3, B:
400 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
NOTES:
1. All voltage values are with respect to GND except for differential input or output voltages.
2. The maximum operating junction temperature is internally limited. Use the dissipation rating table to operate below this temperature.
3. Tested in accordance with MIL-STD-883C, Method 3015.7
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
D
950 mW
7.6 mW/
C
608 mW
494 mW
N
1150 mW
9.2 mW/
C
736 mW
598 mW
This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC
4.75
5
5.25
V
High-level input voltage, VIH
D, DE, and RE
2
VCC
V
Low-level input voltage, VIL
D, DE, and RE
0
0.8
V
Differential input voltage, VID (see Note 4)
- 12
12
V
Voltage at any bus terminal (separately or common mode), VO, VI, or VIC
A, B, Y, or Z
- 7
12
V
High-level output current, IOH
Y or Z
-60
mA
High-level output current, IOH
R
- 8
mA
Low-level output current, IOL
Y or Z
60
mA
Low-level output current, IOL
R
8
mA
Operating free-air temperature, TA
SN65LBC180A
- 40
85
C
Operating free-air temperature, TA
SN75LBC180A
0
70
C
The algebraic convention where the least positive (more negative) limit is designated minimum, is used in this data sheet.
NOTE 4: Differential input/output bus voltage is measured at the noninverting terminal with respect to the inverting terminal.
SN65LBC180A, SN75LBC180A
LOW POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SLLS378C - MAY 2000 - REVISED JUNE 2002
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
driver electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
Input clamp voltage
II = - 18 mA
- 1.5
-0.8
V
RL = 54
,,
SN65LBC180A
1
1.5
3
| VOD |
Differential output voltage
RL = 54
,,
See Figure 1
SN75LBC180A
1.1
1.5
3
V
| VOD |
Differential output voltage
magnitude
RL = 60
,,
SN65LBC180A
1
1.5
3
V
magnitude
RL = 60
,,
See Figure 2
SN75LBC180A
1.1
1.5
3
| VOD |
Change in magnitude of
differential output voltage
(see Note 5)
See Figures 1 and 2
-0.2
0.2
V
VOC(SS)
Steady-state common-mode
output voltage
1.8
2.4
2.8
V
VOC
Change in steady-state
common-mode output voltage
(see Note 5)
See Figure 1
-0.1
0.1
V
IO
Output current with power off
VCC = 0,
VO = - 7 V to 12 V
-10
10
A
IIH
High-level input current
VI = 2 V
- 100
A
IIL
Low-level input current
VI = 0.8 V
- 100
A
IOS
Short-circuit output current
- 7 V
VO
12 V
-250
70
250
mA
Receiver disabled and
driver enabled
5.5
9
ICC
Supply current
VI = 0 or VCC,
No load
Receiver disabled and
driver disabled
0.5
1
mA
No load
Receiver enabled and driver
enabled
8.5
15
All typical values are at VCC = 5 V and TA = 25
C.
NOTE 5:
| VOD | and
| VOC | are the changes in the steady-state magnitude of VOD and VOC, respectively, that occur when the input is changed
from a high level to a low level.
driver switching characteristics over recommended operating conditions (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tPLH
Propagation delay time, low-to-high-level output
2
6
12
ns
tPHL
Propagation delay time, high-to-low-level output
RL = 54
CL = 50 pF,
2
6
12
ns
tsk(p)
Pulse skew ( | tPLH - tPHL | )
RL = 54
,
CL = 50 pF,
See Figure 3
0.3
1
ns
tr
Differential output signal rise time
See Figure 3
4
7.5
11
ns
tf
Differential output signal fall time
4
7.5
11
ns
tPZH
Propagation delay time, high-impedance-to-high-level output
RL = 110
, See Figure 4
12
22
ns
tPZL
Propagation delay time, high-impedance-to-low-level output
RL = 110
, See Figure 5
12
22
ns
tPHZ
Propagation delay time, high-level-to-high-impedance output
RL = 110
, See Figure 4
12
22
ns
tPLZ
Propagation delay time, low-level-to-high-impedance output
RL = 110
, See Figure 5
12
22
ns
PDF 
ZIP