5V Single-Supply RS-232 Drivers/Receivers With Shutdown And Enable

 

SP312AET-L/TR

Manufacturer Part NumberSP312AET-L/TR
Description5V Single-Supply RS-232 Drivers/Receivers With Shutdown And Enable
ManufacturerExar Corporation
TypeTransceiver
SP312AET-L/TR datasheets

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Warranty: 60 days

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Specifications of SP312AET-L/TR

Number Of Drivers/receivers2/2ProtocolRS232
Voltage - Supply4.5 V ~ 5.5 VMounting TypeSurface Mount
Package / Case18-SOIC (0.300", 7.50mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
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Enhanced RS-232 Line Drivers/Receivers
FEATURES
• Operates from a Single +5V Power Supply
• Meets all RS-232F and ITU V.28 Specifications
• Operates with 0.μF Ceramic Capacitors
• No External Capacitors required (SP233A)
• Low Power Shutdown (SP30A, SP32A)
• High Data Rate - 20kbps under load
• Low power CMOS Operation
• +/-2kV Human Body Model ESD Protection
• Lead Free packaging available
The SP233A / SP30A / SP32A devices are a family of line driver and receiver pairs that meets
the specifications of RS-232 and V.28 serial protocols. The devices are pin-to-pin compatible with
popular industry standard pinouts. The SP233A / SP30A / SP32A offer 20kbps data rate under
load, small ceramic type 0.μF charge pump capacitors and overall ruggedness for comercial appli-
cations. Features include Exar's BiCMOS design allowing for low power operation without sacrificing
performance. These devices are available in plastic DIP and SOIC Wide packages operating over
the commercial and industrial temperature ranges.
Model
Number of RS-232
Drivers
Receivers
SP233A
2
2
SP30A
2
2
SP32A
2
2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308
SP233A,SP310A and SP312A
No. of RX
No. of External
μ
active in
F Capacitors Shutdown
0.
Shutdown
N/A
0
0
4
2
4

DESCRIPTION
SELECTION TABLE
WakeUp
TTL Tri-State
No
No
No
Yes
No
Yes
Yes
Yes
Yes

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SP312AET-L/TR Summary of contents

  • Page 1

    ... Model Number of RS-232 Drivers Receivers SP233A 2 2 SP3 SP3 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308 SP233A,SP310A and SP312A No No. of External μ active in F Capacitors Shutdown 0. Shutdown N ...

  • Page 2

    ... RS-232 inPUT Voltage Range Voltage Threshold LOW Voltage Threshold HIGH Hysteresis Resistance Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 AbSoLUTE MAxiMUM RATingS Short Circuit duration Tout.....................................................Continuous Package Power Dissipation: Plastic DIP...............................................375mW (derate 7mW/° ...

  • Page 3

    ... Vcc Power Supply Current, Loaded Shutdown Supply Current SP30A and SP32A only 20 pin PDIP 8 pin PDIP / WSOIC Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308 ELECTRiCAL CHARACTERiSTiCS , unless otherwise noted, Typical values are Vcc= min ...

  • Page 4

    ... Additionally, the driver out- puts LOW to HIGH transition meets the mon- tonic output requirements of the standard. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 Receivers The receivers convert EIA/TIA-232 signal levels to TTL or CMOS logic output levels. Since the ...

  • Page 5

    ... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308 After the ring indicator has propagated through the SP32A receiver, it can be used ...

  • Page 6

    ... V Phases 1 and 3: Store/Double Double charge from C 1 onto C2 now charged to -2xVcc Figure . Charge pump phases Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 + - + Patented 5,306,954 Phase 2 – Vss transfer from C2 to C4. Meanwhile charged to Vcc ...

  • Page 7

    ... Figure 3, SP233A Charge pump waveforms when fully loaded with 3Kohms ( = C+, V-). Figure 4, Loopback results at 60KHZ and 2500pF load ( = TXin TXout/RXin RXout). Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308 Figure 5, Charge pump outputs at start Vcc V V-). 7 ...

  • Page 8

    ... Figure 6, SP233ACP Typical Application circuit Figure 7, SP30A Typical Application circuit Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 Figure 8, SP233ACT Typical Application circuit Figure 9, SP32A Typical Application circuit 8 ...

  • Page 9

    ... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308 9 ...

  • Page 10

    ... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 0 ...

  • Page 11

    ... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A 00_05308  ...

  • Page 12

    ... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP233A,30A,32A_00_05308 2 ...

  • Page 13

    ... EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...

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