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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

< 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.

Applications

Telecom Backplanes

V.11/X.21 Interface

Industrial PLCs

Motor Control

Features

♦ Meet TIA/EIA-422-B (RS-422) and ITU-T V.11

Recommendation

♦ ±15kV ESD Protection on Tx Outputs

♦ Hot-Swap Functionality

♦ Guaranteed 20Mbps Data Rate (MAX3030E,

MAX3032E)

♦ Slew-Rate-Controlled 2Mbps Data Rate

(MAX3031E, MAX3033E)

♦ Available in 16-Pin TSSOP and Narrow SO

Packages

♦ Low-Power Design (<330µW, V

= 3.3V Static)

♦ +3.3V Operation

♦ Industry-Standard Pinout

♦ Thermal Shutdown

MAX3030E–MAX3033E

±15kV ESD-Protected, 3.3V Quad

RS-422 Transmitters

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2671; Rev 0; 10/02

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.

PART TEMP RANGE PIN-PACKAGE

MAX3030ECSE 0°C to +70°C 16 SO (Narrow)

MAX3030ECUE 0°C to +70°C 16 TSSOP

MAX3030EESE -40°C to +85°C 16 SO (Narrow)

MAX3030EEUE -40°C to +85°C 16 TSSOP

MAX3031ECSE 0°C to +70°C 16 SO (Narrow)

MAX3031ECUE 0°C to +70°C 16 TSSOP

MAX3031EESE -40°C to +85°C 16 SO (Narrow)

MAX3031EEUE -40°C to +85°C 16 TSSOP

MAX3032ECSE 0°C to +70°C 16 SO (Narrow)

MAX3032ECUE 0°C to +70°C 16 TSSOP

MAX3032EESE -40°C to +85°C 16 SO (Narrow)

MAX3032EEUE -40°C to +85°C 16 TSSOP

MAX3033ECSE 0°C to +70°C 16 SO (Narrow)

MAX3033ECUE 0°C to +70°C 16 TSSOP

MAX3033EESE -40°C to +85°C 16 SO (Narrow)

MAX3033EEUE -40°C to +85°C 16 TSSOP

DI1

DI4

DO4+

DO4-

DO3-

DO3+

DI3

TOP VIEW

MAX3030E/

MAX3031E

TSSOP/SO

DO1+

DO1-

DO2+

DO2-

DI2

GND

DI1

DI4

DO4+

DO4-

DO3-

DO3+

DI3

MAX3032E/

MAX3033E

TSSOP/SO

DO1+

DO1-

DO2+

EN1&2

DO2-

DI2

GND

EN3&4

Pin Configurations

Summary of content (14 pages)

PAGE 1
9-2671; Rev 0; 10/02 ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters Features ♦ Meet TIA/EIA-422-B (RS-422) and ITU-T V.11 Recommendation ♦ ±15kV ESD Protection on Tx Outputs ♦ Hot-Swap Functionality ♦ Guaranteed 20Mbps Data Rate (MAX3030E, MAX3032E) ♦ Slew-Rate-Controlled 2Mbps Data Rate (MAX3031E, MAX3033E) ♦ Available in 16-Pin TSSOP and Narrow SO Packages ♦ Low-Power Design (<330µW, VCC = 3.3V Static) ♦ +3.
PAGE 2
MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters ABSOLUTE MAXIMUM RATINGS (All Voltages Are Referenced to Device Ground, Unless Otherwise Noted) VCC ........................................................................................+6V EN1&2, EN3&4, EN, EN............................................-0.3V to +6V DI_ ............................................................................-0.3V to +6V DO_+, DO_- (normal condition) .................-0.3V to (VCC + 0.
PAGE 3
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters (3V ≤ VCC ≤ 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) PARAMETER SYMBOL Driver Propagation Delay Low to High tDPLH Driver Propagation Delay High to Low tDPHL CONDITIONS MIN TYP MAX UNITS 8 16 ns RL = 100Ω, CL = 50pF (10% to 90%), Figures 2, 3 10 ns RL = 100Ω, CL = 50pF, VCC = 3.3V ±2 ns RL = 100Ω, CL = 50pF, VCC = 3.
PAGE 4
SWITCHING CHARACTERISTICS—MAX3031E, MAX3033E (continued) (3V ≤ VCC ≤ 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) PARAMETER SYMBOL Skew Part to Part CONDITIONS MIN TYP RL = 100Ω, CL = 50pF, VCC = 3.
PAGE 5
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 60 TA = +25°C 40 TA = 0°C 20 2.0 15 10 2 3 4 NO RESISTIVE LOAD, CL = 200pF, ALL FOUR TRANSMITTERS SWITCHING 1.5 1.0 0.5 0 0 1 0 0.1k 1k 10k 100k 1M 10M 100M 0.1k 1k 10k 100k 1M SUPPLY VOLTAGE (V) DATA RATE (bps) DATA RATE (bps) MAX3030E/MAX3032E SUPPLY CURRENT vs. DATA RATE MAX3031E/MAX3033E SUPPLY CURRENT vs.
PAGE 6
MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters Typical Operating Characteristics (continued) (VCC = +3.3V and TA = +25°C, unless otherwise noted.
PAGE 7
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters CL DI_+ DO_+ RL 2 VOD RL VOD DI_ VOC CL RL 2 DI_- DO_CL Figure 1. Differential Driver DC Test Circuit Figure 2. Differential Driver Propagation Delay and Transition Time Test Circuit 3V DI 1.5V 1.5V 0V tDPHL tDPLH 1/2 VO DO_VO DO_+ S1 RL OUTPUT UNDER TEST CL 1/2 VO VO VDIFF 0V -VO VCC S2 VDIFF = V (DO_+) - V (DO_-) 10% 90% 90% 10% tF tR ENABLE SIGNAL IS ONE OF THE POSSIBLE ENABLE CONFIGURATIONS (SEE TRUTH TABLE).
PAGE 8
MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters Test Circuits and Timing Diagrams (continued) VCC GND DO_+ DI DO_- transmitter outputs of this product family are characterized for protection to ±15kV using the Human Body Model. Other ESD test methodologies include IEC10004-2 Contact Discharge and IEC1000-4-2 AirGap Discharge (formerly IEC801-2). A A ESD Test Conditions ESD performance depends on a variety of conditions.
PAGE 9
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters MAX3030E–MAX3033E Machine Model The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resistance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. Of course, all pins require this protection during manufacturing, not just inputs and outputs. Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports.
PAGE 10
MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters sents the minimum parasitic capacitance that would exist in a typical application. In most cases, more capacitance exists in the system and reduces the magnitude of the glitch. During a “hot-swap” event when the driver is connected to the line and is powered up, the driver must not cause the differential signal to drop below 200mV (Figures 12 and 13). Operation of Enable Pins The MAX3032E/MAX3033E are compatible with the SN75174.
PAGE 11
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters MAX3094 DI1 D1 RT R1 R1OUT DI2 D2 RT R2 R2OUT DI3 D3 RT R3 R3OUT DI4 D4 RT R4 R4OUT EN G EN G VCC MAX3030E–MAX3033E MAX3030E/MAX3031E GND VCC GND Figure 14.
PAGE 12
MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters VCC VCC GND GND EN1&2 EN EN EN3&4 DO1+ DI1 DO1- DO1+ DI1 DO1- DO2+ DI2 DO2- DO2+ DI2 DO2- DO3+ DI3 DO3- DO3+ DI3 DO3- DO4+ DI4 DO4- DO4+ DI4 DO4- MAX3030E/MAX3031E MAX3032E/MAX3033E Figure 15. MAX3030E/MAX3031E Functional Diagram Figure 16.
PAGE 13
±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.
PAGE 14
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) TSSOP4.40mm.EPS MAX3030E–MAX3033E ±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.