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MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

Good quality Programmable IC Chips for sales
Good quality Programmable IC Chips for sales
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MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

China MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers supplier

Large Image :  MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

Product Details:

Place of Origin: Original
Brand Name: MAXIM
Certification: Original Factory Pack
Model Number: MAX3490CSA

Payment & Shipping Terms:

Minimum Order Quantity: 20pcs
Price: Negotiation
Packaging Details: please contact me for details
Delivery Time: 1 Day
Payment Terms: T/T, Western Union,PayPal
Supply Ability: 5200PCS
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Detailed Product Description
Supply Voltage (VCC): 7V Control Input Voltage (RE, DE): –0.3 V T O 7 V
Driver Input Voltage (DI): –0.3 V To 7 V Driver Output Voltage (A, B, Y, Z): –7.5 V To 12 V
Receiver Input Voltage (A, B): –7.5 V To 12 V
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3.3V-Powered, 10Mbps and Slew-Rate-Limited

 

True RS-485/RS-422 Transceivers

General Description

The MAX3483, MAX3485, MAX3486, MAX3488, MAX3490, and MAX3491 are 3.3V, low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3483 and MAX3488 feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486 transmits up to 2.5Mbps. The MAX3485, MAX3490, and MAX3491 transmit at up to 10Mbps. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit. The MAX3488, MAX3490, and MAX3491 feature fullduplex communication, while the MAX3483, MAX3485, and MAX3486 are designed for half-duplex communication.

 

Applications

Low-Power RS-485/RS-422 Transceivers Telecommunications Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks

 

Driver Output Protection

Excessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. A foldback current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range (see Typical Operating Characteristics). In addition, a thermal shutdown circuit forces the driver outputs into a high-impedance state if the die temperature rises excessively.

 

Propagation Delay

Figures 15–18 show the typical propagation delays. Skew time is simply the difference between the low-to-high and high-to-low propagation delay. Small driver/receiver skew times help maintain a symmetrical mark-space ratio (50% duty cycle).

 

The receiver skew time, |tPRLH - tPRHL|, is under 10ns (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.

MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

 

PARAMETER  SYMBOL  CONDITIONS MIN  TYP MAX UNITS
Driver Differential Output Delay  tDD RL = 60Ω, Figure 7 600 900  1400 ns
Driver Differential Output Transition Time tTD RL = 60Ω, Figure 7 400  700  1200 ns
Driver Propagation Delay, Low-to-High Level tPLH RL = 27Ω, Figure 8 700  1000  1500 ns
Driver Propagation Delay, High-to-Low Level tPHL RL = 27Ω, Figure 8 700  1000  1500 ns
tPLH - tPHL| Driver Propagation Delay Skew (Note 2) tPDS RL = 27Ω, Figure 8 100 ns

 

MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

Contact Details
Anterwell Technology Ltd.

Contact Person: Miss. Sharon Yang

Tel: 86-755-61169882

Fax: 86-755-613169859

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