Details, datasheet, quote on part number: SP485
PartSP485
CategoryInterface and Interconnect => RS-485
Descriptionno of Tx/rx = 1Tx/1Rx ;; Duplex = Half ;; VCC (V) = 5 ;; Typ. Icc Current (mA) = 0.9 ;; Data Rate (kbps) = 5,000 ;; Typ. Shut Down Icc (µA) = 0.5 ;; No. Of Rx/tx on Bus = 32 ;; RX Failsafe With Inputs Open = • ;; Features = › Low Power Shutdown › Output Driver Short Circuit Protection ;; Op. Range (°C) = -40 to 85 0 to 70 ;; Package = 8 Pin Pdip 8 Pin Nsoic ;; Esd = 2KV
CompanySipex Corporation
DatasheetDownload SP485 datasheet
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Features, Applications

+5V Only Low Power BiCMOS Driver/Receiver Enable Slew Rate Limited Driver for Low EMI (SP483) Low Power Shutdown Mode (SP481 and SP483) RS-485 and RS-422 Drivers/Receivers

DESCRIPTION The SP481, SP483, and the SP485 are a family of half-duplex transceivers that meet the requirements of RS-485 and RS-422. Their BiCMOS design allows low power operation without sacrificing performance. The SP481 and SP485 meet the requirements of RS-485 and to 5Mbps. Additionally, the SP481 is equipped with a low power Shutdown mode. The SP483 is internally slew rate limited to reduce EMI and can meet the requirements of RS-485 and to 250kbps. The SP483 is also equipped with a low power Shutdown mode.

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............................................................................................................12V Input Voltages to (VCC+0.5V) Receivers................................................................. 15V Output Voltages to (VCC+0.5V) Drivers...................................................................... to (VCC+0.5V) Storage to +150C Power Dissipation...........................................................................500mW

SPECIFICATIONS

PARAMETERS SP481/SP483/SP485 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 SP481/SP485 DRIVER AC Characteristics Maximum Data Rate Driver Input to Output Driver Input to Output Driver Skew Driver Rise or Fall Time Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High

Unloaded; = ; see figure 1 with load; 50; (RS422); see figure 1 with load; 27; (RS485); see figure = 50; see figure = 50; see figure 1 Applies to DE, DI, RE Applies to DE, DI, RE Applies to DE, DI, VO +12V

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

= 100pF; see figures 7; S2 closed = 100pF; see figures 7; S1 closed = 15pF; see figures 9; S1 closed = 15pF; see figures 9; S2 closed

SP481/SP483/SP485 RECEIVER DC Characteristics Differential Input Threshold -0.2 Input Hysteresis Output Voltage High 3.5 Output Voltage Low Three-State (High Impedance) Output Current Input Resistance 12 Input Current (A, B); VIN = 12V Input Current (A, B); VIN = -7V Short-Circuit Current 7

PARAMETERS SP481/SP485 RECEIVER AC Characteristics Maximum Data Rate Receiver Input to Output Receiver Input to Output Diff. Receiver Skew ItPLH-tPHLI Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable from Low Receiver Disable from High SP481 Shutdown Timing Time to Shutdown Driver Enable from Shutdown to Output High Driver Enable from Shutdown to Output Low Receiver Enable from Shutdown to Output High Receiver Enable from Shutdown to Output Low POWER REQUIREMENTS Supply Voltage Supply Current SP481/485 No Load SP483 No Load SP481/SP483 Shutdown Mode ENVIRONMENTAL AND MECHANICAL Operating Temperature Commercial (_C_) Industrial (_E_) Storage Temperature Package Plastic DIP (_S) NSOIC (_N)

= 0V tPLH; RDIFF = 100pF; Figures & 8 tPHL; RDIFF = 100pF; Figures & 8 RDIFF = 100pF;

CRL = 15pF; Figures 9; S1 closed CRL = 15pF; Figures 9; S2 closed CRL = 15pF; Figures 9; S1 closed CRL = 15pF; Figures 9; S2 closed

= 100pF; See figures 7; S2 closed = 100pF; See figures 7; S1 closed = 15pF; See figures 9; S2 closed = 15pF; See figures 9; S1 closed


 

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