19-2671; Rev 0; 10/02
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
General Description
The MAX3030E–MAX3033E family of quad RS-422
transmitters send digital data transmission signals over
twisted-pair balanced lines in accordance with TIA/EIA-
422-B and ITU-T V.11 standards. All transmitter outputs
are protected to ±15kV using the Human Body Model.
The MAX3030E–MAX3033E are available with either a
2Mbps or 20Mbps guaranteed baud rate. The 2Mbps
baud rate transmitters feature slew-rate-limiting to mini-
mize EMI and reduce reflections caused by improperly
terminated cables.
The 20Mbps baud rate transmitters feature low-static
current consumption (I
CC
< 100µA), making them ideal
for battery-powered and power-conscious applications.
They have a maximum propagation delay of 16ns and a
part-to-part skew less than 5ns, making these devices
ideal for driving parallel data. The MAX3030E–
MAX3033E feature hot-swap capability that eliminates
false transitions on the data cable during power-up or
hot insertion.
The MAX3030E–MAX3033E are low-power, ESD-pro-
tected, pin-compatible upgrades to the industry-stan-
dard 26LS31 and SN75174. They are available in
space-saving 16-pin TSSOP and SO packages.
Features
o
Meet TIA/EIA-422-B (RS-422) and ITU-T V.11
Recommendation
o
±15kV ESD Protection on Tx Outputs
o
Hot-Swap Functionality
o
Guaranteed 20Mbps Data Rate (MAX3030E,
MAX3032E)
o
Slew-Rate-Controlled 2Mbps Data Rate
(MAX3031E, MAX3033E)
o
Available in 16-Pin TSSOP and Narrow SO
Packages
o
Low-Power Design (<330µW, V
CC
= 3.3V Static)
o
+3.3V Operation
o
Industry-Standard Pinout
o
Thermal Shutdown
MAX3030E–MAX3033E
Applications
Telecom Backplanes
V.11/X.21 Interface
Industrial PLCs
Motor Control
PART
MAX3030ECSE
MAX3030ECUE
MAX3030EESE
MAX3030EEUE
MAX3031ECSE
Ordering Information
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
16 SO (Narrow)
16 TSSOP
Pin Configurations
TOP VIEW
DI1 1
DO1+ 2
DO1- 3
EN 4
DO2- 5
DO2+ 6
DI2 7
GND 8
16 V
CC
15 DI4
14 DO4+
DI1 1
DO1+ 2
DO1- 3
EN1&2 4
DO2- 5
DO2+ 6
DI2 7
GND 8
16 V
CC
15 DI4
14 DO4+
MAX3031ECUE
MAX3031EESE
MAX3031EEUE
MAX3032ECSE
MAX3032ECUE
MAX3032EESE
MAX3032EEUE
MAX3033ECSE
MAX3033ECUE
MAX3033EESE
MAX3033EEUE
MAX3030E/
MAX3031E
13 DO4-
12 EN
11 DO3-
10 DO3+
9
DI3
MAX3032E/
MAX3033E
13 DO4-
12 EN3&4
11 DO3-
10 DO3+
9
DI3
TSSOP/SO
TSSOP/SO
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
MAX3030E–MAX3033E
ABSOLUTE MAXIMUM RATINGS
(All Voltages Are Referenced to Device Ground, Unless
Otherwise Noted)
V
CC
........................................................................................+6V
EN1&2, EN3&4, EN,
EN............................................-0.3V
to +6V
DI_ ............................................................................-0.3V to +6V
DO_+, DO_- (normal condition) .................-0.3V to (V
CC
+ 0.3V)
DO_+, DO_- (power-off or three-state condition).....-0.3V to +6V
Driver Output Current per Pin.........................................±150mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SO (derate 8.70mW/°C above +70°C)..............696mW
16-Pin TSSOP (derate 9.40mW/°C above +70°C) .......755mW
Operating Temperature Ranges
MAX303_EC_ ......................................................0°C to +70°C
MAX303_EE_ ...................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(3V
≤
V
CC
≤
3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 1)
PARAMETER
DRIVER OUTPUT: DO_+, DO_-
V
OD1
Differential Driver Output
V
OD2
V
OD3
Change in Differential Output
Voltage
Driver Common-Mode Output
Voltage
Change in Common-Mode
Voltage
Three-State Leakage Current
Output Leakage Current
Driver Output Short-Circuit
Current
INPUTS: EN,
EN,
EN1&2, EN3&4
Input High Voltage
Input Low Voltage
Input Current
Hot-Swap Driver Input Current
SUPPLY CURRENT
Supply Current
THERMAL PROTECTION
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
ESD Protection DO_
Human Body Model
T
SH
160
10
±15
°C
°C
kV
I
CC
No load
100
µA
V
IH
V
IL
I
LEAK
I
HOTSWAP
EN,
EN,
EN1&2, EN3&4 (Note 4)
2.0
0.4
±2
±200
V
V
µA
µA
∆V
OD
V
OC
∆V
OC
I
OZ
I
OFF
I
SC
R
L
= 100Ω, Figure 1
R
L
=
∞,
Figure 1
R
L
= 3.9kΩ (for compliance with V.11),
Figure 1
R
L
= 100Ω (Note 2)
R
L
= 100Ω, Figure 1
R
L
= 100Ω (Note 2)
V
OUT
= V
CC
or GND, driver disabled
V
CC
= 0V, V
OUT
= 3V or 6V
V
OUT
= 0V, V
IN
= V
CC
or GND
(Note 3)
-150
-0.4
-0.4
2.0
3.6
3.6
+0.4
3
+0.4
±10
20
V
V
V
µA
µA
mA
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
SWITCHING CHARACTERISTICS—MAX3030E, MAX3032E
(3V
≤
V
CC
≤
3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.)
PARAMETER
Driver Propagation Delay
Low to High
Driver Propagation Delay
High to Low
Differential Transition Time, Low
to High
Differential Transition Time, High
to Low
Differential Skew (Same Channel)
|t
DPLH
- t
DPHL
|
Skew Driver to Driver
(Same Device)
Skew Part to Part
Maximum Data Rate
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
t
DZH
t
DZL
t
DLZ
t
DHZ
S2 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S1 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S1 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S2 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
SYMBOL
t
DPLH
R
L
= 100Ω, C
L
= 50pF, Figures 2, 3
t
DPHL
t
R
t
F
t
SK1
R
L
= 100Ω, C
L
= 50pF, V
CC
= 3.3V
t
SK2
t
SK3
R
L
= 100Ω, C
L
= 50pF, V
CC
= 3.3V,
∆T
MAX
= +5°C
20
50
50
50
50
5
ns
Mbps
ns
ns
ns
ns
±2
ns
8
16
ns
CONDITIONS
MIN
TYP
MAX
UNITS
MAX3030E–MAX3033E
R
L
= 100Ω, C
L
= 50pF (10% to 90%),
Figures 2, 3
10
ns
SWITCHING CHARACTERISTICS—MAX3031E, MAX3033E
(3V
≤
V
CC
≤
3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.)
PARAMETER
Driver Propagation Delay
Low to High
Driver Propagation Delay
High to Low
Differential Transition Time,
Low to High
Differential Transition Time,
High to Low
Differential Skew (Same Channel)
|t
DPLH
- t
DPHL
|
Skew Driver to Driver
(Same Device)
SYMBOL
t
DPLH
R
L
= 100Ω, C
L
= 50pF, Figures 2, 3
t
DPHL
t
R
t
F
t
SK1
R
L
= 100Ω, C
L
= 50pF, V
CC
= 3.3V
t
SK2
±10
ns
40
70
ns
CONDITIONS
MIN
TYP
MAX
UNITS
R
L
= 100Ω, C
L
= 50pF (10% to 90%),
Figures 2, 3
15
50
ns
_______________________________________________________________________________________
3
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
MAX3030E–MAX3033E
SWITCHING CHARACTERISTICS—MAX3031E, MAX3033E (continued)
(3V
≤
V
CC
≤
3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.)
PARAMETER
Skew Part to Part
Maximum Data Rate
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
t
DZH
t
DZL
t
DLZ
t
DHZ
S2 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S1 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S1 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
S2 closed, R
L
= 500Ω, C
L
= 50pF,
Figures 4, 5
SYMBOL
t
SK3
CONDITIONS
R
L
= 100Ω, C
L
= 50pF, V
CC
= 3.3V,
∆T
MAX
= +5°C
2
100
100
150
150
MIN
TYP
MAX
18
UNITS
ns
Mbps
ns
ns
ns
ns
Note 1:
All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device
ground, unless otherwise noted.
Note 2:
∆V
OD
and
∆V
OC
are the changes in V
OD
and V
OC
, respectively, when DI changes state.
Note 3:
Only one output shorted at a time.
Note 4:
This input current is for the hot-swap enable (EN_, EN,
EN)
inputs and is present until the first transition only. After the first
transition, the input reverts to a standard high-impedance CMOS input with input current I
LEAK
.
Typical Operating Characteristics
(V
CC
= +3.3V and T
A
= +25°C, unless otherwise noted.)
DIFFERENTIAL OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX3030E toc01
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT LOW VOLTAGE
MAX3030E toc02
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT HIGH VOLTAGE
MAX3030E toc03
4
DIFFERENTIAL OUTPUT VOLTAGE (V)
200
150
125
OUTPUT CURRENT (mA)
100
75
50
25
T
A
= 0°C
2
T
A
= +85°C
1
T
A
= +25°C
OUTPUT CURRENT (mA)
3
150
100
50
0
0
30
60
90
120
OUTPUT CURRENT (mA)
0
0
1
2
3
4
OUTPUT LOW VOLTAGE (V)
0
0
1
2
3
4
OUTPUT HIGH VOLTAGE (V)
4
_______________________________________________________________________________________
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
Typical Operating Characteristics (continued)
(V
CC
= +3.3V and T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX3030E toc04
MAX3030E–MAX3033E
MAX3030E/MAX3032E
SUPPLY CURRENT vs. DATA RATE
MAX3030E toc05
MAX3031E/MAX3033E
SUPPLY CURRENT vs. DATA RATE
NO RESISTIVE LOAD, C
L
= 200pF,
ALL FOUR
TRANSMITTERS
SWITCHING
MAX3030E toc06
100
DRIVERS ENABLED
80
SUPPLY CURRENT (µA)
30
25
SUPPLY CURRENT (mA)
20
15
10
5
0
NO RESISTIVE LOAD, C
L
= 200pF,
ALL FOUR
TRANSMITTERS
SWITCHING
2.5
60
T
A
= +25°C
40
T
A
= 0°C
20
SUPPLY CURRENT (mA)
T
A
= +85°C
2.0
1.5
1.0
0.5
0
0
1
2
SUPPLY VOLTAGE (V)
3
4
0
0.1k
1k
10k
100k
1M
10M
100M
0.1k
1k
10k
100k
1M
10M
DATA RATE (bps)
DATA RATE (bps)
MAX3030E/MAX3032E
SUPPLY CURRENT vs. DATA RATE
MAX3030E toc07
MAX3031E/MAX3033E
SUPPLY CURRENT vs. DATA RATE
ALL FOUR TRANSMITTERS
LOADED AND SWITCHING
R
L
= 100Ω, C
L
= 200pF
MAX3030E toc08
MAX3030E
DRIVER PROPAGATION DELAY
(LOW TO HIGH)
MAX3030E toc09
130
ALL FOUR TRANSMITTERS
LOADED AND SWITCHING
R
L
= 100Ω, C
L
= 200pF
100
DI_
1V/div
120
SUPPLY CURRENT (mA)
110
SUPPLY CURRENT (mA)
97
94
100
DIFFERENTIAL
OUTPUT
2V/div
90
91
80
0.1k
1k
10k
100k
1M
10M
100M
DATA RATE (bps)
88
0.1k
1k
10k
100k
1M
10M
10ns/div
DATA RATE (bps)
MAX3030E
DRIVER PROPAGATION DELAY
(HIGH TO LOW)
MAX3030E toc10
MAX3031E
DRIVER PROPAGATION DELAY
(LOW TO HIGH)
MAX3030E toc11
MAX3031E
DRIVER PROPAGATION DELAY
(HIGH TO LOW)
MAX3030E toc12
DI_
1V/div
DIFFERENTIAL
OUTPUT
2V/div
DIFFERENTIAL
OUTPUT
2V/div
DIFFERENTIAL
OUTPUT
2V/div
DI_
1V/div
10ns/div
20ns/div
20ns/div
DI_
1V/div
_______________________________________________________________________________________
5
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