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19-2756; Rev 1; 4/03
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
General Description
The MAX3430 fault-protected RS-485 transceiver features 80V protection from overvoltage signal faults on communication bus lines. Each device contains one driver and one receiver, and the output pins can withstand faults, with respect to ground, of up to 80V. Even if the faults occur when the transceiver is active, shut down, or powered off, the device will not be damaged. The MAX3430 operates from a 3.3V supply and features a slew-rate-limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing errorfree data transmission at data rates up to 250kbps. The MAX3430 has a 1/4-unit-load receiver input impedance allowing up to 128 transceivers on a single bus and features fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open. Hot-swap circuitry eliminates false transitions on the data cable during circuit initialization or connection to a live backplane. Short-circuit current limiting and thermal-shutdown circuitry protect the driver against excessive power dissipation. The MAX3430 is available in 8-pin SO and 8-pin PDIP packages, and is specified over commercial and industrial temperature ranges.
PART MAX3430CPA MAX3430CSA MAX3430EPA MAX3430ESA
Features
o 80V Fault Protection o 12kV ESD Protection o +3.3V Operation o Internal Slew-Rate Limiting o 250kbps Data Rate o Allows Up to 128 Transceivers on the Bus o -7V to +12V Common-Mode Input Voltage Range o True Fail-Safe Inputs o Hot-Swap Input Structure on DE o Available in 8-Pin SO and PDIP Packages
MAX3430
Ordering Information
TEMP RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C PIN-PACKAGE 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO
Applications
RS-422/RS-485 Communications Lighting Systems Industrial-Control Local Area Networks Profibus Applications Multimaster RS-485 Networks
Pin Configuration and Typical Operating Circuit
TOP VIEW
VCC 0.1F DE
RO RE
1 2
R
8 7 6
VCC B A GND
RO
1
R
8 7B 6 Rt A GND
MAX3430
D B Rt A R RE RO DI
DE 3 DI 4 D
5
RE 2 3 DE 4 DI
D
5
DIP/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.
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
ABSOLUTE MAXIMUM RATINGS
(All voltages are referenced to GND.) VCC ........................................................................................+5V RE, DE, DI...................................................-0.3V to (VCC + 0.3V) Driver Output Voltage (A, B) (Note 1) ..................................80V Receiver Input Voltage (A, B) (Note 1) ................................80V RO ..............................................................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.88mW/C above +70C)................471mW 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ...727mW Operating Temperature Ranges MAX3430C_ _ .....................................................0C to +70C MAX3430E_ _ ..................................................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Note 1: A, B must be terminated with 54 or 100 to guarantee 80V fault protection.
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
(VCC = +3.3V 10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25C.)
PARAMETER DRIVER Differential Driver Output Change in Magnitude of Differential Output Voltage Driver Common-Mode Output Voltage Change in Magnitude of Common-Mode Voltage DRIVER LOGIC Driver Input High Voltage Driver Input Low Voltage Driver Input Current Driver Short-Circuit Output Current Driver Short-Circuit Foldback Output Current RECEIVER DE = GND, RE = GND, VIN = +12V Input Current (A, B) Receiver Differential Threshold Voltage Receiver Input Hysteresis IA, B DE = GND, RE = GND, VIN = -7V VIN = -80V to +80V VTH VTH -7V VCM 12V V A + VB = 0 -6 -200 25 250 -200 +6 -50 A mA mV mV VIH VIL IIN IOSD IOSDF DI DI DI 0 VOUT 12V (Note 3) -7V VOUT VCC (Note 3) (VCC - 1V) VOUT 12V (Note 3) -7V VOUT 1V (Note 3) -250 +10 -10 2.0 0.8 1 +250 V V A mA mA VOD VOD VOC VOC Figure 1, RL = 100 Figure 1, RL = 54 Figure 1, RL = 100 or 54 (Note 2) Figure 1, RL = 100 or 54 Figure 1, RL = 100 or 54 (Note 2) VCC / 2 2.0 1.5 VCC VCC 0.2 3 0.2 V V V V SYMBOL CONDITIONS MIN TYP MAX UNITS
2
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.3V 10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25C.)
PARAMETER RECEIVER LOGIC RO Output High Voltage RO Output Low Voltage Three-State Output Current at Receiver Receiver Input Resistance Receiver Output Short-Circuit Current CONTROL Control Input High Voltage Control Input Low Voltage Input Current DE Current Latch During First DE Rising Edge Input Current RE Current Latch During First RE Rising Edge VCIH VCIL DE, RE DE, RE 80 80 2.0 0.8 V V A A VOH VOL IOZR RIN IOSR IO = -1.6mA IO = 1mA 0 VO VCC -7V VCM 12V 0 VRO VCC 48 95 VCC 0.6 0.4 1 V V A k mA SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX3430
PROTECTION SPECIFICATIONS
(VCC = +3.3V 10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25C.)
PARAMETER ESD Protection SUPPLY CURRENT No load, RE = 0, DE = VCC, DI = 0 or VCC Supply Current Supply Current in Shutdown Mode ICC No load, RE = VCC, DE = VCC, DI = 0 or VCC RE = VCC, DE = 0 3.5 3.0 10 8 200 mA SYMBOL A, B CONDITIONS Human Body Model MIN TYP 12 MAX UNITS kV
ISHDN
A
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
DRIVER SWITCHING CHARACTERISTICS
(VCC = +3.3V 10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25C.)
PARAMETER Driver Propagation Delay Driver Differential Output Rise or Fall Time Differential Driver Output Skew, |tDPLH - tDPHL| Maximum Data Rate Driver Enable to Output Low Driver Disable Time from Output Low Driver Output Enable Time from Shutdown Driver Enable to Output High Driver Disable Time from Output High Driver Output Enable Time from Shutdown Driver Time to Shutdown tDZL tDLZ Figure 4, CL = 50pF Figure 4, CL = 50pF SYMBOL tDPLH tDPHL tDR, tDF tDSKEW CONDITIONS Figures 2 and 3, RL = 54, CL = 50pF Figures 2 and 3, RL = 54, CL = 50pF Figures 2 and 3, RL = 54, CL = 50pF 250 5200 1000 8000 5200 1000 8000 1000 250 150 MIN TYP 700 700 MAX 1500 1500 1200 200 UNITS ns ns ns kbps ns ns ns ns ns ns ns
tDZL(SHDN) Figure 4, CL = 50pF tDZH tDHZ Figure 5, CL = 50pF Figure 5, CL = 50pF
tDZH(SHDN) Figure 5, CL = 50pF tSHDN
RECEIVER SWITCHING CHARACTERISTICS
(VCC = +3.3V 10%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25C.)
PARAMETER Receiver Propagation Delay Receiver Output Skew, |tRPLH - tRPHL| Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time form High Receiver Output Enable Time from Shutdown Receiver Time to Shutdown SYMBOL tRPLH tRPHL tSKEW tRZL tRZH tRLZ tRHZ CONDITIONS Figure 6, CL = 20pF, VID = 2V, VCM = 0 Figure 6, CL = 20pF Figure 7, R = 1k, CL = 20pF Figure 7, R = 1k, CL = 20pF Figure 7, R = 1k, CL = 20pF Figure 7, R = 1k , CL = 20pF MIN TYP MAX 120 120 40 80 80 80 80 5000 1000 UNITS ns ns ns ns ns ns ns ns
tRZH(SHND), Figure 7, R = 1k, CL = 20pF tRZL(SHND) tSHDN
Note 2: VOD and VOC are the changes in VOD and VOC, respectively, when the DI input changes state. Note 3: The short-circuit output current applies to peak current just prior to foldback current limiting; the short-circuit foldback output current applies during current limiting to allow a recovery from bus contention.
4
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
Typical Operating Characteristics
(VCC = +3.3V, TA = +25C, unless otherwise noted.)
MAX3430
SUPPLY CURRENT vs. TEMPERATURE
MAX3430 toc01
SHUTDOWN CURRENT vs. TEMPERATURE
MAX3430 toc02
OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE
MAX3430 toc03
5 RE = 0 DE = VCC 4 SUPPLY CURRENT (mA)
200 175 SHUTDOWN CURRENT (A) 150 125 100 75 50 25
20
16 OUTPUT CURRENT (mA)
3
12
2
8
1
4
0 -40 -20 0 20 40 60 80 TEMPERATURE (C)
0 -40 -20 0 20 40 60 80 TEMPERATURE (C)
0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE
MAX3430 toc04
RECEIVER OUTPUT HIGH VOLTAGE vs. TEMPERATURE
MAX3430 toc05
RECEIVER OUTPUT LOW VOLTAGE vs. TEMPERATURE
IO = +1mA
MAX3430 toc06
18 15 OUTPUT CURRENT (mA) 12 9 6 3 0 0 0.5 1.0 1.5 2.0 2.5 3.0
3.30 IO = -1.6mA 3.25 OUTPUT HIGH VOLTAGE (V) 3.20 3.15 3.10 3.05 3.00
0.5
OUTPUT LOW VOLTAGE (V) -40 -20 0 20 40 60 80
0.4
0.3
0.2
0.1
0 -40 -20 0 20 40 60 80 TEMPERATURE (C) TEMPERATURE (C)
3.5
OUTPUT HIGH VOLTAGE (V)
DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX3430 toc07
DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE
MAX3430 toc08
A, B CURRENT vs. A, B VOLTAGE (TO GROUND)
MAX3430 toc09
120 100 OUTPUT CURRENT (mA) 80 60 40 20 0 0 0.5 1.0 1.5 2.0 2.5 3.0
3.5 DIFFERENTIAL OUTPUT VOLTAGE (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 RL = 100
3 2 A, B CURRENT (mA) 1 0 -1 -2 RE = DE = GND -3
RL = 54
3.5
-40
-20
0
20
40
60
80
-80
-60
-40
-20
0
20
40
60
80
DIFFERENTIAL OUTPUT VOLTAGE (V)
TEMPERATURE (C)
A, B VOLTAGE (V)
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5
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
Test Circuits/Timing Diagrams
A RL 2 VOD RL 2 B DI 3V DE A B VOC CL VO RL CL
Figure 1. Driver DC Test Load
Figure 2. Driver Timing Test Circuit
VCC
VCC DI 0
RL = 500
VCC/2 tDPLH tDPHL 1/2 VO
S1 0 OR +3V D CL 50pF
OUT
B VO A 1/2 VO 80% VO 20% tDR tSKEW = |tDPLH - tDPHL| tDF
VCC OUT
GENERATOR
50
VOD = V (A) - V (B) 80% 20%
DE tDZL, tDZL(SHDN)
tDLZ VCC/2 0 VCC
VOM = (VOL + VCC)/2
VOL
0.25V
Figure 3. Driver Propagation Delays
Figure 4. Driver Enable and Disable Times (tDZL, tDLZ, tDLZ(SHDN))
S1 0 OR +3V D CL 50pF
OUT DE
RL = 500
VCC
tDZH, tDZH(SHDN)
VCC/2 0 0.25V VOH 0 tDHZ
GENERATOR
50
OUT
VOM = (0 + VOH)/2
Figure 5. Driver Enable and Disable Times (tDHZ, tDZH, tDZH(SHDN)) 6 _______________________________________________________________________________________
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
Test Circuits/Timing Diagrams (continued)
B VID R CL 20pF A VOH tRPLH 1.5V tRPHL
MAX3430
0
RO
VOL
Figure 6. Receiver Propagation Delays
+1.5V -1.5V
S3 VID R RO CL 20pF
R 1k
S1 VCC S2
GENERATOR
50
3V RE 0 tRZH, tRZH(SHDN) VOH RO VOH/2 0 RO tRZL, tRZL (SHDN) S1 OPEN S2 CLOSED S3 = +1.5V RE 1.5V
3V S1 CLOSED S2 OPEN S3 = -1.5V
0
VCC (VOL + VCC)/2 VOL
3V RE 1.5V 0 tRHZ RO VOH 0.25V 0 RO 0.25V S1 OPEN S2 CLOSED S3 = +1.5V RE 1.5V
3V S1 CLOSED S2 OPEN S3 = -1.5V
0
tRLZ
VCC
VOL
Figure 7. Receiver Enable and Disable Times
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
Pin Description
PIN 1 2 NAME RO RE Receiver Output Receiver Output Enable. RO is enabled when RE is low; RO is high impedance when RE is high. The device enters a low-power shutdown mode if RE is high and DE is low. Driver Output Enable. Driving DE high enables the driver outputs. Pulling DE low puts the driver outputs in a high-impedance state. If RE is high and DE is low, the device enters a low-power shutdown mode. If the driver outputs are enabled, the device functions as a line driver, and when they are high impedance it functions as a line receiver if RE is low. Driver Input. A logic low on DI forces output A low and output B high, while a logic high on DI forces output A high and output B low. Ground Noninverting Receiver Input/Driver Output Inverting Receiver Input/Driver Output Positive Supply, VCC = +3.3V 10%. Bypass VCC to GND with a 0.1F ceramic capacitor. FUNCTION
3
DE
4 5 6 7 8
DI GND A B VCC
Function Tables
Table 1. Transmitting
INPUTS RE X X 0 DE 1 1 0 DI 1 0 X X OUTPUTS B 0 1 High-Z High-Z A 1 0 High-Z High-Z MODE Normal Normal Normal Shutdown
Table 2. Receiving
INPUTS RE 0 0 0 1 X = Don't care. DE 0 0 0 0 (A - B) -50mV -200mV Inputs open X OUTPUTS RO 1 0 1 High-Z MODE Normal Normal Normal Shutdown
1 0 X = Don't care.
8
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
Detailed Description
Driver
The driver accepts a single-ended, logic-level input (DI) and transfers it to a differential, RS-485 level output (A and B). Driving DE high enables the driver, while pulling DE low places the driver outputs (A and B) into a high-impedance state.
True Fail-Safe
The MAX3430 uses a -50mV to -200mV differential input threshold to ensure true fail-safe receiver inputs. This threshold guarantees the receiver outputs a logic high for shorted, open, or idle data lines. The -50mV to -200mV threshold complies with the 200mV threshold EIA/TIA-485 standard.
MAX3430
Receiver
The receiver accepts a differential, RS-485 level input (A and B), and transfers it to a single-ended, logic-level output (RO). Pulling RE low enables the receiver, while driving RE high and DE low places the receiver inputs (A and B) into a high-impedance state.
12kV ESD Protection
As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against ESD encountered during handling and assembly. The MAX3430 receiver inputs/driver outputs (A, B) have extra protection against static electricity found in normal operation. Maxim's engineers have developed state-of-the-art structures to protect these pins against 12kV ESD without damage. After an ESD event, the MAX3430 continues working without latchup. ESD protection can be tested in several ways. The receiver inputs are characterized for protection up to 12kV using the Human Body Model.
Low-Power Shutdown
Force DE low and RE high to shut down the MAX3430. A time delay of 1s prevents the device from accidentally entering shutdown due to logic skews when switching between transmit and receive modes. Holding DE low and RE high for at least 1ms guarantees that the MAX3430 enters shutdown. In shutdown, the device consumes 100A supply current.
ESD Test Conditions
ESD performance depends on a number of conditions. Contact Maxim for a reliability report that documents test setup, methodology, and results.
80V Fault Protection
The driver outputs/receiver inputs of RS-485 devices in industrial network applications often experience voltage faults resulting from transients that exceed the -7V to +12V range specified in the EIA/TIA-485 standard. In these applications, ordinary RS-485 devices (typical absolute maximum ratings -8V to +12.5V) require costly external protection devices. To reduce system complexity and the need for external protection, the driver outputs/receiver inputs of the MAX3430 withstand voltage faults of up to 80V with respect to ground without damage (see the Absolute Maximum Ratings section, Note 1). Protection is guaranteed regardless of whether the device is active, shut down, or without power.
Human Body Model
Figure 8a shows the Human Body Model, and Figure 8b shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a 1.5k resistor.
Driver Output Protection
Two mechanisms prevent excessive output current and power dissipation caused by faults or bus contention. The first, a foldback current limit on the driver output
RC 1M CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE
RD 1.5k DISCHARGE RESISTANCE DEVICE UNDER TEST
IP 100% 90% AMPERES 36.8% 10% 0 0 tRL TIME
Ir
PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE)
Cs 100pF
STORAGE CAPACITOR
tDL CURRENT WAVEFORM
Figure 8a. Human Body ESD Test Model
Figure 8b. Human Body Model Current Waveform 9
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80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
stage, provides immediate protection against short circuits over the whole common-mode voltage range. The second, a thermal shutdown circuit, forces the driver outputs into a high-impedance state if the die temperature exceeds +160C. Normal operation resumes when the die temperature cools by +140C, resulting in a pulsed output during continuous short-circuit conditions.
Hot-Swap Capability
Hot-Swap Inputs Inserting circuit boards into a hot, or powered backplane may cause voltage transients on DE, RE, and receiver inputs A and B that can lead to data errors. For example, upon initial circuit board insertion, the processor undergoes a power-up sequence. During this period, the highimpedance state of the output drivers makes them unable to drive the MAX3430 enable inputs to a defined logic level. Meanwhile, leakage currents of up to 10A from the high-impedance output, or capacitively coupled noise from VCC or GND, could cause an input to drift to an incorrect logic state. To prevent such a condition from occurring, the MAX3430 features hot-swap input circuitry on DE to safeguard against unwanted driver activation during hot-swap situations. When VCC rises, an internal pulldown circuit holds DE low for at least 10s, and until the current into DE exceeds 200A. After the initial power-up sequence, the pulldown circuit becomes transparent, resetting the hot-swap tolerable input. Hot-Swap Input Circuitry At the driver enable input (DE), there are two NMOS devices, M1 and M2 (Figure 9). When VCC ramps from 0, an internal 15s timer turns on M2 and sets the SR latch, which also turns on M1. Transistors M2, a 2mA current sink, and M1, a 100A current sink, pull DE to GND through a 5.6k resistor. M2 pulls DE to the disabled state against an external parasitic capacitance up to 100pF that may drive DE high. After 15s, the timer deactivates M2 while M1 remains on, holding DE low against three-state leakage currents that may drive DE high. M1 remains on until an external current source overcomes the required input current. At this time, the SR latch resets M1 and turns off. When M1 turns off, DE reverts to a standard, high-impedance CMOS input. Whenever VCC drops below 1V, the input is reset.
120 B D DI DE
VCC 15s TIMER TIMER
5.6k DE 100A M1 2mA M2
DE (HOT SWAP)
Figure 9. Simplified Structure of the Driver Enable Pin (DE)
120 DI D DE RO RE R B
A
B
A
B
A
A R RO RE
R
R D
MAX3430
D
DI
DE
RO RE
DI
DE
RO RE
Figure 10. Typical RS-485 Network 10 ______________________________________________________________________________________
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
Applications Information
128 Transceivers on the Bus
The standard RS-485 receiver input impedance is 12k (one-unit load), and a standard driver can drive up to 32-unit loads. The MAX3430 transceiver 1/4-unit-load receiver input impedance (48k) allows up to 128 transceivers connected in parallel on one communication line. Connect any combination of these devices, and/or other RS-485 devices, for a maximum of 32 unit loads to the line.
RS-485 Applications
The MAX3430 transceiver provides bidirectional data communications on multipoint bus transmission lines. Figure 10 shows a typical network applications circuit. The RS-485 standard covers line lengths up to 4000ft. The signal line must be terminated at both ends in its characteristic impedance, and stub lengths off the main line kept as short as possible.
MAX3430
Chip Information
TRANSISTOR COUNT: 300 PROCESS: BiCMOS
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11
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver MAX3430
Package Information
(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.)
INCHES DIM A A1 B C e E H L 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
MILLIMETERS 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 1.27
N
E
H
VARIATIONS:
1
INCHES
MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC
TOP VIEW
DIM D D D
MIN 0.189 0.337 0.386
MAX 0.197 0.344 0.394
D C
A e B A1
0 -8 L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL DOCUMENT CONTROL NO. REV.
21-0041
B
1 1
12
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SOICN .EPS
80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
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.)
MAX3430
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
PDIPN.EPS

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