MAX3491CSD-G002 Maxim Integrated, MAX3491CSD-G002 Datasheet
MAX3491CSD-G002
Specifications of MAX3491CSD-G002
Related parts for MAX3491CSD-G002
MAX3491CSD-G002 Summary of contents
Page 1
... Pin Configurations appear at end of data sheet. MAX3488 0.25 Functional Diagrams continued at end of data sheet. MAX3490 10 UCSP is a trademark of Maxim Integrated Products, Inc. MAX3491 10 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. MAX3483/MAX3485/MAX3486/ MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers ____________________________Features Operate from a Single 3.3V Supply— ...
Page 2
... V ≤ OZR CC OUT CC -7V ≤ V ≤ 12V +25°C) A MIN TYP MAX 2.0 1.5 1.5 0.2 0.2 2.0 0.8 ±2 = 12V 1 -7V -0 12V 20 OUT = -7V -20 OUT = 12V OUT = -7V OUT -0.2 0 0.4 CC 0.4 ±1 12 UNITS µA mA µA 1 µ µA kΩ Maxim Integrated ...
Page 3
... Driver Output Enable Time to High Level Driver Output Disable Time from High Level Driver Output Disable Time from Low Level Driver Output Enable Time from Shutdown to Low Level Driver Output Enable Time from Shutdown to High Level Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers CONDITIONS ...
Page 4
... MIN TYP MAX UNITS 80 190 300 120 120 720 1400 ns 720 1400 ns Maxim Integrated ...
Page 5
... TEMPERATURE (°C) OUTPUT CURRENT vs. DRIVER OUTPUT LOW VOLTAGE 175 150 125 100 OUTPUT LOW VOLTAGE (V) Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE -20 -18 -16 -14 -12 - 3.5 0 0.5 1.0 1.5 2.0 2.5 OUTPUT HIGH VOLTAGE (V) DRIVER OUTPUT CURRENT vs ...
Page 6
... Noninverting Receiver Input and Noninverting Driver Output A Noninverting Receiver Input B Inverting Receiver Input and Inverting Driver Output B Inverting Receiver Input Positive Supply: 3.0V ≤ N.C. No Connect—not internally connected SHUTDOWN CURRENT vs. TEMPERATURE 0 -40 - 100 TEMPERATURE (°C) FUNCTION FUNCTION ≤ 3.6V CC Maxim Integrated ...
Page 7
... GND GND 7 8 N.C. DIP/SO Figure 3. MAX3491 Pin Configuration and Typical Operating Circuit Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers GND NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH. ...
Page 8
... Figure 7. Driver Differential Output Delay and Transition Times Figure 5. Driver (+) (-) IN OUT OUT C = 15pF (NOTE 5) L 375 V -7V to +12V 375 with Varying Common-Mode Voltage OD 1.5V 1. 90% 90% 50% 50% 10% 10 Maxim Integrated = 2.0V -2.0V ...
Page 9
... GENERATOR (NOTE Figure 9. Driver Enable and Disable Times ( 50pF L (NOTE 5) GENERATOR (NOTE 4) 50 Figure 10. Driver Enable and Disable Times (t Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers OUT 15pF L OUT (NOTE ...
Page 10
... S2 CLOSED OUT OPEN IN S2 CLOSED OUT 0V 3.0V 1.5V 1. RPHL CLOSED 1.5V S2 OPEN S3 = -1. PRZL t PRSL CLOSED 1.5V S2 OPEN S3 = -1. PRLZ V CC 0.25V V OL ≤ 6.0ns Maxim Integrated CC = 50Ω. ...
Page 11
... Inputs Open 10dB/div 0Hz 500kHz/div Figure 13. Driver Output Waveform and FFT Plot of MAX3485/ MAX3490/MAX3491 Transmitting a 125kHz Signal Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers __________Applications Information The MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/ MAX3491 are low-power transceivers for RS-485 and RS-422 communications. The MAX3483 and MAX3488 can transmit and receive at data rates up to 250kbps, the MAX3486 ...
Page 12
... B 1V/div A 1V/div RO 2V/div 20ns/div Figure 16. MAX3485/MAX3490/MAX3491 Receiver Propagation Delay Driven by External RS-485 Device B 1V/div A 1V/div RO 2V/div 1 s/div Figure 18. MAX3483/MAX3488 Receiver Propagation Delay DI 5V/div 2V/div RO 5V/div 2 s/div Figure 20. MAX3485/MAX3490/MAX3491 System Differential Voltage at 125kHz Driving 4000 ft of Cable Maxim Integrated ...
Page 13
... The receiver skew time PRLH (20ns for the MAX3483/MAX3488). The driver skew times are 8ns for the MAX3485/MAX3490/MAX3491, 11ns for the MAX3486, and typically under 100ns for the MAX3483/MAX3488. Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers ...
Page 14
... 120 D Y NOTE: RE AND DE ON MAX3491 ONLY. Figure 23. Line Repeater for MAX3488/MAX3490/MAX3491 MAX3488 MAX3490 MAX3491 DATA IN DATA OUT Y 120 120 MAX3488 MAX3490 MAX3491 Maxim Integrated ...
Page 15
... MAX3490C/D 0°C to +70°C MAX3490EPA -40°C to +85°C MAX3490ESA -40°C to +85°C MAX3491CPD 0°C to +70°C MAX3491CSD 0°C to +70°C MAX3491C/D 0°C to +70°C MAX3491EPD -40°C to +85°C MAX3491ESD -40°C to +85°C * Contact factory for for dice specifications. ...
Page 16
... L 0.115 0.150 2.92 INCHES MILLIMETERS DIM PINS MIN MAX D 8 0.348 0.390 D 14 0.735 0.765 18. 0.745 0.765 18. 0.885 0.915 22. 1.015 1.045 25. 1.14 1.265 28.96 MAX 1.75 0.25 0.49 0.25 4.00 1.27 6.20 1.27 MIN MAX 4.80 5.00 8.55 8.75 9.80 10.00 21-0041A MAX – 5.08 – 4.45 2.03 0.56 1.65 0.30 2.03 8.26 7.87 – – – 10.16 3.81 MIN MAX 8.84 9.91 19.43 19.43 23.24 26.54 32.13 Maxim Integrated ...
Page 17
... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 1994 Maxim Integrated MAX3488/MAX3490/MAX3491 True RS-485/RS-422 Transceivers The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. 17 ...