SP3508EB Exar Corporation, SP3508EB Datasheet
SP3508EB
Specifications of SP3508EB
Related parts for SP3508EB
SP3508EB Summary of contents
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... The SP3508 is ideal for WAN serial ports in networking equipment such as routers, access concentrators, network muxes, DSU/CSU's, networking test equipment, and other access devices. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3508 Now Available in Lead Free Packaging Refer to page 9 for pinout APPLICATIONS • ...
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... V.28 DRIVER AC Parameters (Outputs) Transition Time Instantaneous Slew Rate Propagation Delay: t 0.5 PHL Propagation Delay: t 0.5 PLH Max. Transmission Rate 20 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ABSOLUTE MAXIMUM RATINGS Package Derating: ø JA +0.5V) ø +0.5V) CC These are stress ratings only and functional operation of the +0 ...
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... Sensitivity V.10 RECEIVER AC Parameters Propagation Delay: t PHL Propagation Delay: t PLH Max. Transmission Rate 20 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com The ♦ denotes the specifications which apply over the full operating tempera- TYP. MAX. UNITS ♦ kΩ ...
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... V.11 RECEIVER AC Parameters Propagation Delay: t PHL Propagation Delay: t PLH Skew Max. Transmission Rate 20 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ELECTRICAL SPECIFICATIONS The ♦ denotes the specifications which apply over the full operating tempera- TYP. MAX. UNITS +/-6.0 ♦ ...
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... Max. Transmission Rate 20 TRANSCEIVER LEAKAGE CURRENTS Driver Output 3-State Cur- rent Receiver Output 3-State Current Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ELECTRICAL SPECIFICATIONS The ♦ denotes the specifications which apply over the full operating tempera- TYP. MAX. UNITS +/-.20 V +/-0 ...
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... CC I (No Mode Selected) CC (V.28 / RS-232) (V. / RS-422) (EIA-530 & RS-449) (V.35) Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ELECTRICAL SPECIFICATIONS The ♦ denotes the specifications which apply over the full operating tempera- TYP. MAX. UNITS 3.3 3.45 V ♦ ...
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... RS-423/V. Tri-state to Output LOW PZL t ; Tri-state to Output HIGH PZH t ; Output LOW to Tri-state PLZ t ; Output HIGH to Tri-state PHZ Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com MIN. TYP. MAX. Units 0.70 5.0 µs 0.40 2.0 µs 0.20 2.0 µs ...
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... PHZ TRANSCEIVER TO TRANSCEIVER SKEW RS-232 Driver RS-232 Receiver RS-422 Driver RS-422 Receiver RS-423 Driver RS-423 Receiver V.35 Driver V.35 Receiver Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com OTHER AC CHARACTERISTICS: Continued MIN. TYP. MAX. UNITS 0.0 2.0 µs 0.0 2.0 µ ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 9 PINOUT SP3508_00_072208 ...
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... Mode Select Input 20 D2 Mode Select Input 2 DLATCH# Decoder Latch Input 22 TERM_OFF Termination Disable Input 23 VCC Power Supply Input 24 C3P Charge Pump Capacitor 25 GND Signal Ground Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Receiver Enable Input DTE 0 SP3508_00_072208 ...
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... RI Receiver TTL Output Receiver TTL Output 47 GND Signal Ground 48 VCC Power Supply Input 49 RD(B) RxD Non-Inverting Input 50 RD(A) RxD Inverting Input Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Driver TTL Input DCE Receiver TTL Output DTE SP3508_00_072208 ...
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... Charge Pump Capacitor 70 CN Charge Pump Capacitor 7 GND Signal Ground 72 C2P Charge Pump Capacitor 73 VCC Power Supply Input 74 CP Charge Pump Capacitor 75 GND Signal Ground Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Non-Inverting Input DTE Inverting Input DTE 2 SP3508_00_072208 ...
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... TT(B) TxCE Non-Inverting Output 96 GND Signal Ground 97 SD(A) TxD Inverting Output 98 VCC Power Supply Input 99 SD(B) TxD Non-Inverting Output 00 VCC Power Supply Input Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Non-Inverting Output DCE Inverting Output DCE 3 SP3508_00_072208 ...
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... R IN(b) High-Z V. IN(a) V.28 V. IN(a) V.28 V.10 8 Table 2. Receiver Mode Selection Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com SP3508 Driver Table RS-232 RS-449 EIA-530A Mode Mode Mode (V.28) (V.36) 011 100 101 V.28 V.11 V.11 High-Z V ...
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... C Figure 3. V.28 Driver Output Slew Rate Figure 5. V.28 Driver Output Power-Off Impedance Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Figure 2. V.28 Driver Output Loaded Voltage V O scilloscope T Scope used f or sle w rate measurement. Figure 4. V.28 Driver Output Short-Circuit Current ...
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... A 3.9kΩ C Figure 9. V.0 Driver Output Open-Circuit Voltage A C Figure . V.0 Driver Output Short-Circuit Current Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com I ia ±15V Figure 8. V.28 Receiver Input Open Circuit Bias Figure 0. V.0 Driver Output Test Terminated Volt- ...
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... Figure 5. V.0 Receiver Input IV Graph Figure 7. V. Driver Output Test Terminated Volt- age Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com O scilloscope Figure 4. V.0 Receiver Input Current +3. 25mA +10V Figure 6. V. Driver Output Open-Circuit Voltage 50Ω 50Ω Figure 8 ...
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... Figure 9. V. Driver Output Power-Off Current A Oscilloscope B C Figure 2. V. Driver Output Rise/Fall Time Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com I xa ±0.25V ±0.25V xb Figure 20. V. Receiver Input Current 50Ω 50Ω -10V V 50Ω E -3. 25mA Figure 22. V. Receiver Input IV Graph ...
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... Figure 23. V. Receiver Input Current w/ Termina- tion Figure 26. V.35 Driver Output Source Impedance Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ±6V i [mA [mA 0.1 Figure 24. V. Receiver Input Graph with Termina- tion ±6V Figure 25. V.35 Driver Output Test Terminated Volt- ...
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... Figure 30. V.35 Receiver Input Short-Circuit Imped- ance Figure 32. Driver/Receiver Timing Test Circuit Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com O scilloscope 50Ω Figure 29. V.35 Receiver Input Source Impedance Any one of the three conditions f or disab ling the dr iver ...
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... A – B – V 0D2 IVE PLH SKEW PHL PLH Figure 37. Receiver Propagation Delays Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com eceiver S 1 Output S 2 Figure 34. Receiver Timing Test Load Circuit f > 10MHz; t < 5ns ; t < 5ns PLH ...
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... nable OUT nable OUT 0V Figure 39. V.28 (RS-232) and V.0 (RS-423) Driver Enable and Disable Times Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com f = 1MHz; t < 10ns ; t < 10ns 1.5V O utput normally utput normally 1. 60kH z; t < 10ns ; t < ...
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... Figure 40. Typical V.0 Driver Output Waveform. Figure 42. Typical V.28 Driver Output Waveform. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Figure 4. Typical V. Driver Output Waveform. Figure 43. Typical V.35 Driver Output Waveform. 23 SP3508_00_072208 ...
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... RRTEN RRT( ICEN TM(a) TM TMEN RECEIVER TERMINATION NETWORK V.35 MODE 51ohms V.11 MODE 124ohms RX ENABLE 51ohms Figure 44. Functional Diagram Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com +3.3V (decoupling capacitor not shown VDD 1mF 1mF 1mF V C1+ C1- ...
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... The mode of each driver in the dif- ferent interface modes that can be selected is shown in Table . Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com There are four basic types of driver circuits – ITU-T-V.28 (RS-232), ITU-T-V.0 (RS-423), ITU-T-V. (RS-422), and CCITT-V.35. ...
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... Table shows the mode of each receiver in the different Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com interface modes that can be selected. There are two basic types of receiver cir- cuits—ITU-T-V .28 (RS-232) and ITU-T-V., (RS-422) ...
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... C 1 – –3 V Figure 45. Charge Pump - Phase . Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com are open, terminated but open, or shorted together. For single-ended V.28 and V.0 receivers, there are internal 5kΩ pull-down resistors on the inputs which produces a logic high (“ ...
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... V- compared to V+ due to the inherent inefficiencies in the design. The clock rate for the charge pump typically operates at 250kHz. The external capacitors can be as low as µF with a 6V breakdown voltage rating. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com and the negative side is connected to ground. CC ...
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... With the voltage VSS2 SS2 across C smaller than the voltage across C3, the charge flows from VSS2 voltage at the V equals -V SS2 V CC Figure 49. Circuit for an Ideal Voltage Inverter. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com VDD +6V + – – ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 30 SP3508_00_072208 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 3 SP3508_00_072208 ...
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... HIGH ("1"), the latch locks out the data and prevents the mode from changing until this pin is brought to a logic LOW. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com There are internal pull-up devices on D0, D and D2, which allow the device SHUTDOWN mode (" ...
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... TxD 39 RxD 32 TxCE 40 RxC TxC 34 RTS 42 CTS 35 DTR 43 DSR 36 DCD_DCE 44 DCD_DTE Figure 50. Loopback Path Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 97 SD(a) 99 SD(b) 50 RD(a) 49 RD(b) 93 TT(a) 95 TT(b) 52 RT(a) 51 RT(b) 89 ST(a) 91 ST(b) 55 TxC(a) 53 TxC(b) 81 RS(a) 83 RS(b) 57 CS(a) 56 CS(b) ...
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... RLEN 9 LLEN 10 RDEN 11 RTEN 12 TxCEN 13 CSEN 14 DMEN 15 RRTEN 16 ICEN 17 TMEN Figure 51. SP3508 Typical Operating Configuration to Serial Port Connector with DCE/DTE program- mability Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com C2 C1 1mF 1mF C1+ C1- C2+ C2- C3+ 1mF SS1 ...
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... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com PACKAGE: 100 PIN LQFP 35 SP3508_00_072208 ...
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... 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 ...