MAX3071E Maxim Integrated Products, MAX3071E Datasheet
MAX3071E
Available stocks
Related parts for MAX3071E
MAX3071E Summary of contents
Page 1
... The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion. The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflec- tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The ...
Page 2
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND) Supply Voltage (V ).............................................................+6V CC Control Input Voltage (RE, DE, SLR, H/F, TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage ...
Page 3
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers DC ELECTRICAL CHARACTERISTICS (continued 3.3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Driver Short-Circuit Output Current Driver Short-Circuit ...
Page 4
... Driver Disable Time from High t Driver Enable from Shutdown to t DZH(SHDN) Output High Driver Enable from Shutdown to t DZL(SHDN) Output Low Time to Shutdown t SHDN RECEIVER SWITCHING CHARACTERISTICS MAX3070E/MAX3071E/MAX3072E/MAX3079E with SRL = UNCONNECTED (250kbps 3.3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL t RPLH ...
Page 5
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers DRIVER SWITCHING CHARACTERISTICS MAX3073E/MAX3074E/MAX3075E/MAX3079E with SRL = 3.3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL Driver ...
Page 6
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers DRIVER SWITCHING CHARACTERISTICS MAX3076E/MAX3077E/MAX3078E/MAX3079E with SRL = GND (16Mbps 3.3V ±10 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL ...
Page 7
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers (V = 3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 1 0.7 0.6 0.5 -50 - ...
Page 8
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers (V = 3.3V +25°C, unless otherwise noted SHUTDOWN CURRENT vs. TEMPERATURE 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 ...
Page 9
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers (V = 3.3V +25°C, unless otherwise noted DRIVER PROPAGATION DELAY (500kbps) MAX3070E toc18 DI 2V/div V Y 2V/div 400ns/div ...
Page 10
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers GENERATOR DZH DZH(SHDN) OUT Figure 4. Driver Enable and Disable Times ( GENERATOR DZL DZL(SHDN OUT V ...
Page 11
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers V ATE ID Figure 6. Receiver Propagation Delay Test Circuit +1.5V -1.5V S1 OPEN S2 CLOSED S3 = +1. OPEN S2 CLOSED S3 = +1.5V 1. RHZ 0.25V ...
Page 12
... ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers PIN MAX3070E MAX3071E MAX3072E MAX3073E MAX3074E MAX3075E MAX3076E MAX3077E MAX3078E HALF- FULL-DUPLEX DUPLEX DEVICES DEVICES — — — — — — — — — — — — — — — — — — — ...
Page 13
... Receiver Phase. Connect RXP to GND or leave 13 13 RXP unconnected for normal transmitter phase/polarity. Connect to V Positive Supply with a 0.1µF capacitor. No Connect. Not internally connected. Can be connected — — N.C. to GND. MAX3071E/MAX3074E/MAX30767E OUTPUTS INPUT High-Z High-Z Shutdown INPUTS A, B ≥ -50mV OUTPUT ≤ ...
Page 14
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers MAX3072E/MAX3075E/MAX3078E TRANSMITTING INPUTS MAX3079E INPUTS RE TXP ...
Page 15
... MAX3076E/MAX3078E/MAX3079E also feature a hot- swap capability allowing line insertion without erro- neous data transfer (see the Hot Swap Capability section). The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps ...
Page 16
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers V CC 10µs TIMER SR LATCH TIMER 5kΩ DE 100µA 500µ Figure 9. Simplified Structure of the Driver Enable Pin (DE) MAX3079E Programming The MAX3079E has several programmable operating modes. Transmitter ...
Page 17
... Any combination of these devices as well as other RS-485 transceivers with a total of 32- unit loads or fewer can be connected to the line. Machine Model The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflec- tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The ...
Page 18
... ZH(SHDN) from driver/receiver-disable mode (t MAX3070E/MAX3071E/MAX3073E/ MAX3074E/MAX3076E/MAX3077E/ MAX3079E (FULL-DUPLEX 120Ω 120Ω Figure 11. Line Repeater for MAX3070E/MAX3071E/MAX3073E/ MAX3074E/MAX3076E/MAX3077E/MAX3079E in Full-Duplex Mode 120Ω MAX3072E MAX3075E MAX3078E MAX3079E (HALF-DUPLEX) Figure 12. Typical Half-Duplex RS-485 Network 18 ______________________________________________________________________________________ Two mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention ...
Page 19
... Yes No 0.5 Yes Yes 16 No Yes Yes Selectable Yes Y 120Ω 120Ω MAX3070E R MAX3071E MAX3073E MAX3074E MAX3076E MAX3077E MAX3079E (FULL-DUPLEX) Selector Guide RECEIVER/ TRANSCEIVERS DRIVER ON BUS ENABLE Yes 256 No 256 Yes 256 Yes 256 No 256 Yes 256 Yes 256 No ...
Page 20
... B GND 4 TYPICAL FULL-DUPLEX OPERATING CIRCUIT 0.1µ GND TYPICAL HALF-DUPLEX OPERATING CIRCUIT NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORMS DIAGRAMS. REFER TO PINS A AND B WHEN DE IS HIGH. MAX3070E MAX3073E MAX3076E GND DE MAX3071E V CC MAX3074E MAX3077E GND MAX3072E MAX3075E DE MAX3078E ...
Page 21
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers Pin Configurations and Typical Operating Circuits (continued) TOP VIEW H RXP RXP MAX3079E H ...
Page 22
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers PART TEMP RANGE MAX3072EEPA -40°C to +85°C MAX3072EESA -40°C to +85°C MAX3072EAPA -40°C to +125°C MAX3072EASA -40°C to +125°C MAX3073EEPD -40°C to +85°C MAX3073EESD -40°C to +85°C MAX3073EAPD -40°C to +125°C MAX3073EASD -40°C ...
Page 23
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information 23 ...
Page 24
ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 24 ______________________________________________________________________________________ Package Information (continued) ...
Page 25
... 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 ____________________ 25 © 2003 Maxim Integrated Products ...