Details, datasheet, quote on part number: SP491ECN
PartSP491ECN
CategoryInterface and Interconnect => RS-485
Descriptionno of Tx/rx = 1Tx/1Rx ;; Duplex = Full ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.9 ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs Open = • ;; Features = › Output Driver Short Circuit Protection ;; Op. Range (°C) = -40 to 85 0 to 70 ;; Package = 8 Pin Pdip 8 Pin Soic ;; Esd = 15KV
CompanySipex Corporation
DatasheetDownload SP491ECN datasheet
Cross ref.Similar parts: ISL8491EIBZ, SN75ALS180D, DS14185, DS1487, DS16F95A, DS16F95QML, DS36276, DS36277, DS3695, DS3695A
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Features, Applications

+5V Only Low Power BiCMOS Driver/Receiver Enable (SP491E) RS-485 and RS-422 Drivers/Receivers Pin Compatible with LTC490 and (SP490E) s Pin Compatible with LTC491 and (SP491E) s Improved ESD Specifications: 15kV Human Body Model 15kV IEC1000-4-2 Air Discharge 8kV IEC1000-4-2 Contact Discharge DESCRIPTION... The is a low power differential line driver/receiver meeting RS-485 and RS-422 standards to 10Mbps. The SP491E is identical to the SP490E with the addition of driver and receiver tri-state enable lines. Both products feature 200mV receiver input sensitivity, over wide common mode range. The SP490E is available in 8-pin plastic DIP and 8-pin NSOIC packages for operation over the commercial and industrial temperature ranges. The SP491E is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial and industrial temperature ranges.

These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC....................................................................................................+7V Input Voltages (VCC+0.5V) Receivers..................................................................14V Output Voltages to (VCC+0.5V) Storage to +150 Power Dissipation.....................................................................1000mW

SPECIFICATIONS

PARAMETERS SP490E DRIVER DC Characteristics Differential Output Voltage Differential Output Voltage Differential Output Voltage Change in Magnitude of Driver Differential Output Voltage for Complimentary States Driver Common-Mode Output Voltage Input High Voltage Input Low Voltage Input Current Driver Short-Circuit Current VOUT = HIGH VOUT = LOW SP490E DRIVER AC Characteristics Maximum Data Rate Driver Input to Output Driver Input to Output Driver Skew Driver Rise or Fall Time

Unloaded; = ; see Figure 1 With Load; 50; (RS-422); see Figure 1 With Load; 27; (RS-485); see Figure = 50; see Figure = 50; see Figure 1 Applies to D Applies to D Applies VO +12V

RDIFF = 100pF tPLH; RDIFF = 100pF; see Figures 3 and 6 tPHL; RDIFF = 100pF; see Figures 3 and 5 see Figures 3 and 5, tSKEW = | tDPLH - tDPHL| From to 90%; RDIFF = 100pF; see Figures 3 and 5

SP490E RECEIVER DC Characteristics Differential Input Threshold -0.2 Input Hysteresis Output Voltage High 3.5 Output Voltage Low Input Resistance 12 Input Current (A, B); VIN = 12V Input Current (A, B); VIN = -7V Short-Circuit Current

PARAMETERS SP490E RECEIVER AC Characteristics Maximum Data Rate Receiver Input to Output Receiver Input to Output Diff. Receiver Skew ItPLH-tPHLI POWER REQUIREMENTS Supply Voltage Supply Current ENVIRONMENTAL AND MECHANICAL Operating Temperature Commercial (_C_) Industrial (_E_) Storage Temperature Package Plastic DIP (_P) NSOIC (_N)

Figure 2. Receiver Timing Test Load Circuit
Figure 4. Driver Timing Test Load #2 Circuit

 

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