|Category||Communication => Transeivers|
|Description||High-fanout RS-485 Transceiver|
|Datasheet||Download SP485R datasheet
s Allows Over 400 Transceivers On A Transmission Line s High Impedance on Receiver Inputs (RIN = 150k typical) s Half-Duplex Configuration Consistant With Industry Standard Pinout to +12V Common Mode Input Voltage Range s Includes Shutdown Mode (ICC < 10µA) (For SP481R Only) s Low Power Consumption (250mW) s Separate Driver and Receiver Enable
DESCRIPTION... The SP481R and SP485R are our newest members of Sipex's RS-485 family. The SP481R and SP485R are pin-to-pin equivalent with our existing SP485 product and contain enhancements such as higher ESD tolerance and high receiver input impedance. The higher receiver input impedance allows for connecting over 400 transceivers on a single transmission line without degrading the RS-485 driver signal. Each device is packaged an 8-pin plastic DIP or 8-pin narrow SOIC package. The SP481R offers a shutdown feature via the enable pins which will reduce the supply current (ICC) below 1µA typical.
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 Storage to +150°C Power Dissipation 8-pin Plastic DIP...........................1000mW 8-pin Plastic N-SOIC.......................1000mW Package Derating: 8-pin Plastic DIP øJA....................................................62 °C/W 8-pin Plastic N-SOIC øJA....................................................62 °C/WSPECIFICATIONS
MIN. LOGIC INPUTS VIL VIH LOGIC OUTPUTS VOL VOH RS-485 DRIVER DC Characteristics TTL Input Levels VIL VIH Outputs Open Circuit Voltage Differential Output Balance Common-Mode Output Current Short Circuit Current AC Characteristics Maximum Data Rate Output Transition Time Propagation Delay tPHL tPLH Driver Output Skew RS-485 RECEIVER DC Characteristics TTL Output Levels VOL VOH Tri-State Output Current Inputs Common Mode Range Receiver Sensitivity Input Impedance
Volts mA Mbps RL=54, CL=50pF |VT| - |VT| RL=54 Terminated +12V RL=54 Rise/fall time, 10%90% See Figures 3 and RDIFF=54, CL1=CL2=100pF see Figure 3 and 5, tSKEW = | tDPLH - tDPHL |MIN. AC Characteristics Maximum Data Rate Propagation Delay tPHL tPLH Differential Receiver Skew
SHUTDOWN TIMING (SP481R) Time to Shutdown 50 RS-485 Driver Enable Time Enable to Low Enable to High Disable Time Disable From Low Disable From High RS-485 Receiver Enable Time Enable to Low Enable to High Disable Time Disable From Low Disable From High POWER REQUIREMENTS Supply Voltage VCC Supply Current ICC No Load No Load Supply Current in Shutdown ENVIRONMENTAL Operating Temperature Commercial (..C..) Industrial (..E..) Storage Temperature
RE = VCC, = 0V See Figures 4 and CL=15pF, S1 Closed CL=15pF, S2 Closed See Figures 4 and CL=15pF, S1 Closed CL=15pF, S2 Closed See Figures 2 and CL=15pF, S1 Closed CL=15pF, S2 Closed See Figures 2 and CL=15pF, S1 Closed CL=15pF, S2 Closed1 Unit Load Maximum Input Current versus Voltage
|Some Part number from the same manufacture Sipex Corporation|
|SP485RCN High-fanout RS-485 Transceiver|
|SP486 no of Tx/rx = 4Tx ;; Duplex = N/a ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.5 ua ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs|
|SP486E Enhanced Quad Rs-485/rs-422 Line Driver|
|SP486ES no of Tx/rx = 4Tx ;; Duplex = N/a ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.5 ua ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs|
|SP487E Enhanced Quad Rs-485/rs-422 Line Driver|
|SP487ES no of Tx/rx = 4Tx ;; Duplex = N/a ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.5 ua ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs|
|SP488 no of Tx/rx = 4Rx ;; Duplex = N/a ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 1 ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = N/a ;; RX Failsafe With Inputs|
|SP488A High Speed Quad RS-485/RS-422 Line Receivers|
|SP488CS no of Tx/rx = 4Rx ;; Duplex = N/a ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 1 ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = N/a ;; RX Failsafe With Inputs|
|SP490 no of Tx/rx = 1Tx/1Rx ;; Duplex = Full ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.9 ;; Data Rate (kbps) = 5,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs|
|SP495 no of Tx/rx = 4Tx/4Rx ;; Duplex = Half ;; VCC (V) = +5 ;; Typ. Icc Current (mA) = 2 ;; Data Rate (kbps) = 10,000 ;; Typ. Shut Down Icc (µA) = N/a ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs|
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