SP3221EEY-L/TR Exar, SP3221EEY-L/TR Datasheet
SP3221EEY-L/TR
Specifications of SP3221EEY-L/TR
Available stocks
Related parts for SP3221EEY-L/TR
SP3221EEY-L/TR Summary of contents
Page 1
... RS-232 cable is connected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than µA. Device Power RS- 232 Supplies Drivers SP322E +3.0V to +5.5V Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com EN C1+ V+ C1- C2+ C2- variations V- ...
Page 2
... Output Leakage Current Output Voltage LOW Output Voltage HIGH Vcc - 0.6 NOTE 0.1µF, tested at 3.3V ±10 0.047µF, C2-C4 = 0.33µF, tested at 5V±10%. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Output Voltages TxOUT.............................................................+3.2V RxOUT, STATUS.......................-0. Short-Circuit Duration TxOUT.....................................................Continuous Storage Temperature......................-65° ...
Page 3
... STSH Receiver Positive or Negative Threshold to STATUS LOW (t ) STSL NOTE 0.1µF, tested at 3.3V ±10 0.047µF, C2-C4 = 0.33µF, tested at 5V±10%. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ELECTRICAL CHARACTERISTICS = +3.0V to +5.5V with 25°C (Note 2). AMB MIN. TYP. MAX. UNITS +/-5 ...
Page 4
... Receiver Propagation Delay t and t PHL PLH Receiver Output Enable Time Receiver Output Disable Time Driver Skew Receiver Skew Transition-Region Slew Rate Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com = +3.0V to +5.5V with 25°C. AMB MIN. TYP. MAX. UNITS 250 kbps 0 ...
Page 5
... Figure . SP322E Typical Operating Circuit Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com TYPICAL OPERATING CIRCUIT 5 SP322E_0_2052 ...
Page 6
... Figure 2. Supply Current VS. Supply Voltage 100 200 Figure 4. Supply Current VS.Data Rate Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com TYPICAL PERFORMANCE CHARACTERISTICS = +25°C. AMB 2.7 3 5.2 -6 Figure 3. Transmitter Output Voltage VS. Supply ...
Page 7
... GND Ground Vcc +3.0V to +5.5V supply voltage Apply logic LOW to shut down drivers and charge pump. This overrides all SHUTDOWN AUTO ON-LINE ® circuitry and ONLINE (refer to table 2). Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com PIN DESCRIPTION Function 7 Pin # 2 ...
Page 8
... IN Supervisor IC Figure 5. Interface Circuitry Controlled by Micropro- cessor Supervisory Circuit Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com THEORY OF OPERATION The SP3221E is made up of four basic circuit blocks: . Driver, 2. Receiver, 3. The Exar propri- etary charge pump, and 4. AUTO ON-LINE circuitry ...
Page 9
... SHUTDOWN = V , the device will shut down if CC there is no activity present at the Receiver inputs. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Receiver The receiver converts ±5.0V EIA/TIA-232 levels to TTL or CMOS logic output levels. The receiver has an inverting output that can be disabled by using the EN pin ...
Page 10
... switched to V and the negative side is CC connected to GND. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com Phase 3 — V charge storage — The third phase of DD the clock is identical to the first phase — the ...
Page 11
... Figure 8. Charge Pump - Phase Figure 9. Charge Pump - Phase Figure 0. Charge Pump Waveforms Figure . Charge Pump - Phase 3 Figure 2. Charge Pump - Phase 4 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com – V Storage Capacitor ...
Page 12
... CC 3.0V to 3.6V 4.5V to 5.5V 3.0V to 5.5V Table 4. Capacitor selection table Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com on the transmitter outputs and may slightly reduce power consumption. C2, C3, and C4 can be increased without changing C’s value For best charge pump efficiency locate the charge pump and bypass capacitors as close as possible to the IC ...
Page 13
... X the external transmitters are disabled. Oth- erwise, R INACT will logic LOW. X Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com The second stage of the AUTO ON-LINE circuitry, shown in Figure 5, processes the receiver's R ® cumulated delay that disables the device to a µ ...
Page 14
... STATUS DRIVER RS-232 OUTPUT VOLTAGES Figure 3. AUTO ON-LINE Timing Waveforms ® Figure 4. Stage I of AUTO ON-LINE Figure 5. Stage II of AUTO ON-LINE Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ONLINE LOW HIGH LOW HIGH/LOW HIGH/LOW ...
Page 15
... Figure6. ESD Test Circuit for Human Body Model Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. The transceiver IC receives most of the ESD current when the ESD source is applied to the connector pins ...
Page 16
... DEVICE PIN HUMAN BODY TESTED MODEL Driver Output ±15kV Receiver Input ±15kV Table 5. Transceiver ESD Tolerance Levels Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 30A , S 5A 0A t=0ns Figure 8. ESD Test Waveform for IEC6000-4-2 ) are 330Ω S ...
Page 17
... Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com 7 PACKAGE: 16 Pin TSSOP SP322E_0_2052 ...
Page 18
... SP322EEY-L .................................................... -40°C to +85°C ------------------------------------------6-pin TSSOP SP322EEY-L/TR .............................................. -40°C to +85°C ------------------------------------------6-pin TSSOP Note: "-L" indicates lead free packaging, "/TR" is for tape and reel option. Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com ORDERING INFORMATION Temperature Range ...
Page 19
... 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 writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...