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ZT3491E Dataheets PDF



Part Number ZT3491E
Manufacturers Zywyn
Logo Zywyn
Description Low Power 3V 250kbps/16Mbps RS485E Transceivers
Datasheet ZT3491E DatasheetZT3491E Datasheet (PDF)

ZT3485E Low Power 3V 250kbps/16Mbps RS485 Transceivers Zywyn Corporation ZT3485E Zywyn ZT3483E, ZT3485E ZT3488E, ZT3490E, ZT3491E Low Power 3V 250kbps/16Mbps RS485E Transceivers Features • Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for VCC at +3.3V ±10% • Low quiescent current – 0.5mA typ., 1.5mA max. • Low shutdown current (where applicable) - 0.05μA typical, 10μA max. • Guaranteed standard data rate 250kbps or 16Mbps • True Fail-Saf.

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ZT3485E Low Power 3V 250kbps/16Mbps RS485 Transceivers Zywyn Corporation ZT3485E Zywyn ZT3483E, ZT3485E ZT3488E, ZT3490E, ZT3491E Low Power 3V 250kbps/16Mbps RS485E Transceivers Features • Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for VCC at +3.3V ±10% • Low quiescent current – 0.5mA typ., 1.5mA max. • Low shutdown current (where applicable) - 0.05μA typical, 10μA max. • Guaranteed standard data rate 250kbps or 16Mbps • True Fail-Safe (Open and Short) Receiver • -7V to +12V common-mode input voltage range • Half-Duplex or Full-Duplex configuration • Allows up to 1 unit load (32 devices) on the same common bus • Controlled driver output slew rate and receiver input filtering • Active-high driver enable and active-low receiver enable • ESD Protection on bus terminals ±15kV Human Body Model (HBM) • Drop-in Replacements for MAX3483E, MAX3485E, MAX3488E, MAX3490E, MAX3491E • High fanout driving 1/8 unit load (256 devices) available on ZT3070E Series General Description The ZT3485E series devices are 3V differential data line transceivers for RS485/RS422 communication that consist of one driver and one receiver with high level of ESD protection. They are designed for balanced transmission lines interface that meet ANSI standard TIA/EIA-485-A and ISO 8482:1987(E) specifications. The ZT3485E series devices span out with half or full duplex, data rate guaranteed at 250kbps or 16Mbps, and allow one unit load that fan out 32 devices sharing a common bus. The I/Os are enhanced-electrostatic discharge (ESD) protected, exceeding ±15kV Human Body Model (HBM). Applications • RS-422/RS-485 communications • Utility meters • Industrial process control • Building automation • Level translators • Transceivers for EMI-sensitive applications • Routers and HUBs • Industrial-controlled Local Area Networks • Industrial PCs, embedded PCs and peripherals ZT348xE ZT3491E Product Selection Guide And Cross Reference Part Num ber ZT3483E ZT3485E ZT3488E ZT3490E ZT3491E Duplex Half Half Full Full Full # 0f Tx/ Rx 1/ 1 1/ 1 1/ 1 1/ 1 1/ 1 Data Ra t e ( Mbps) 0.25 16 0.25 16 16 # of Tx/ Rx on Bu s 32 32 32 32 32 Slew Ra t e Lim it Yes No Yes No No Rx I nput Filt e r in g Low Pow er Shutdow n Tx/ Rx En a b l e Yes Yes Yes No Yes Yes Yes No No No No No No Yes Yes ESD on Tx/ Rx ± 15kV ± 15kV ± 15kV ± 15kV ± 15kV Num ber of Pins 8 8 8 8 14 Pin - t o- Pin Cr oss Re f e r e n ce MAX3 4 8 3 E MAX3 4 8 5 E MAX3 4 8 8 E MAX3 4 9 0 E MAX3 4 9 1 E Zywyn Specifications subject to change without notice Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • Ema1il [email protected] • www.zywyn.com June 2012 rev. 1.5 Zywyn Corporation ZT3485E Absolute Maximum Ratings Storage Considerations These are stress ratings only and functional operation of Storage in a low humidity environment is preferred. the device at these ratings or any other above those indi- Large high density plastic packages are moisture sen- cated in the operation sections of the specifications is not sitive and should be stored in Dry Vapor Barrier Bags. implied. Exposure to absolute maximum rating conditions Prior to usage, the parts should remain bagged and for extended periods of time may affect reliability. stored below 40°C and 60%RH. If the parts are re- Power Supply, (VCC).................................... –0.3V to +7.0V Input Voltages DI, DE, RE ........................................ –0.3V to (VCC +0.3V) Differential Input Voltage, (VID) ..................... -12V to +12V A, B (VI) ......................................................... -9V to +13V Output Voltages RO ............................................................... –0.3V to +6.0V Y, Z (A & B on Half Duplex) ...........................-9V to +13.0V Operating Temperature...............................–40°C to +85°C moved from the bag, they should be used within 168 hours or stored in an environment at or below 20%RH. If the above conditions cannot be followed, the parts should be baked for 12 hours at 125°C in order to remove moisture prior to soldering. Zywyn ships product in Dry Vapor Barrier Bags with a humidity indicator card and desiccant pack. The humidity indicator should be below 30%RH. The MSL of this product is 3. The information furnished by Zywyn has been carefully reviewed for accuracy and reliability. Its application or Storage Temperature................................–65°C to +150°C use, however, is solely the responsibility of the user. No responsibility of the use of this information become part Power Dissipation Per Package 8-pin PDIP (derate 9.09mW/°C above +70°C) ........ 722mW 8-pin nSOIC (derate 6.14mW/°C above +70°C) ....... 500mW 14-pin PDIP (derate 10.00mW/°C above +70°C) ...... 800mW 14-pin nSOIC (derate 8.33mW/°C above +70°C) .... 667mW of the terms and conditions of any subsequent.


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