LTC1321 LINER [Linear Technology], LTC1321 Datasheet
LTC1321
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LTC1321 Summary of contents
Page 1
... Both driver outputs and receiver inputs feature 10kV ESD protection. A loopback mode connects the driver outputs back to the receiver inputs for diagnostic self-test. The LTC1321/LTC1322 can support RS232 voltage levels when 6.5V V LTC1335 supports receiver output enable but not RS232 levels ...
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... Output Voltage Drivers ................................................. – 25V to 25V Receivers ............................... – 0. Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range + 0.3V) LTC1321C/LTC1322C/LTC1335C ......... LTC1321I/LTC1322I/LTC1335I ......... – Storage Temperature Range ................ – 150 C + 0.3V) Lead Temperature (Soldering, 10 sec)................ 300 RS485 DRIVERS/RECEIVERS 4 EIA/TIA-562 DRIVERS/RECEIVERS ...
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... DC ELECTRICAL CHARACTERISTICS (LTC1321/LTC1322 5 SYMBOL PARAMETER RS485 Driver (SEL1 = SEL2 = HIGH) V Differential Driver Output Voltage (Unloaded) OD1 V Differential Driver Output Voltage (With Load) OD2 V Change in Magnitude of Driver Differential OD Output Voltage for Complementary Output States V Driver Common-Mode Output Voltage OC V Change in Magnitude of Driver Common-Mode ...
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... V Supply Current Supply Current (LTC1321/LTC1322 Supply Current ELECTRICAL CHARACTERISTICS (LTC1321/LTC1322 5 SYMBOL PARAMETER EIA/TIA-562 Mode (SEL1 = SEL2 = LOW) SR Slew Rate t Transition Time T t Driver Input to Output PLH t Driver Input to Output PHL t Receiver Input to Output ...
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... –1 –2 –3 OUTPUT LOW –4 –5 –50 – 100 125 TEMPERATURE (°C) 1321 G07 LTC1321/LTC1322/LTC1335 RS485 Driver Differential Output Current vs Output Voltage 25° DIFFERENTIAL OUTPUT VOLTAGE (V) 1321 G02 ...
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... LTC1321/LTC1322/LTC1335 W U TYPICAL PERFORMANCE CHARACTERISTICS Receiver Output High Voltage vs Temperature 5 3mA OUT 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 –50 – 100 125 TEMPERATURE (°C) 1321 G10 Receiver Output Current vs Output High Voltage 120 T = 25° 2.0 2.5 3.5 4.0 4.5 5.0 3.0 OUTPUT VOLTAGE (V) 1321 G13 Driver Output Leakage Current (Disable/Shutdown) vs Temperature ± ...
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... Mode. R (Pin 22): Receiver Output (Pin 23): No Connection. V (Pin 24): Positive Supply; 4.75V V CC LTC1321/LTC1322/LTC1335 LTC1322/LTC1335 OE/V (Pin 1): For LTC1335, pin 1 is the receiver DD output enable with internal pull-down. For LTC1322, pin 1 is the positive supply input for EIA/TIA-562 drivers. B1: (Pin 2): Receiver Input. ...
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... LTC1321/LTC1322/LTC1335 CTIO TABLES LTC1321 RS485 Driver Mode INPUTS LINE ON/OFF SEL DE D CONDITION Fault Fault Fault RS485 Receiver Mode INPUTS ON/OFF SEL A – < – 0. > 0. Inputs Open ...
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... EIA562 Receiver Mode OUTPUT R ON/OFF LTC1321 Interface Configuration Without Loopback PORT 1 = RS485 MODE PORT 1 = EIA562 MODE PORT 2 = EIA562 MODE PORT 2 = RS485 MODE DE1 ...
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... FOR LTC1322 ONLY, PIN AND OE IS ALWAYS ENABLED. DD FOR LTC1335, PIN 1 IS OE, AND V IS CONNECTED SEL1/SEL2 = LTC1321 Interface Configuration With Loopback PORT 1 = RS485 MODE PORT 1 = EIA562 MODE PORT 2 = EIA562 MODE PORT 2 = RS485 MODE ...
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... Figure 2. RS485 Driver/Receiver Timing Test Circuit 0V 0V SEL SEL 15pF 0V 1321/22/35 F05 Figure 5. EIA/TIA-562 Receiver Timing Test Circuit LTC1321/LTC1322/LTC1335 PORT 1 = RS485 MODE PORT 2 = RS485 MODE / ...
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... LTC1321/LTC1322/LTC1335 U SWITCHI G WAVEFOR – Z – OD2 A – B –V OD2 – 1MHz: t 10ns: t 10ns r f 1.5V t PLH 90 V(Y) – V(Z) DIFF 50% 10% 1 ...
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... Each port may be configured as single-ended EIA562 transceiver(s) or differential RS485 transceiver by forcing the port’s selection input to a LOW or HIGH, respectively. The LTC1321 provides one EIA562 driver and one EIA562 receiver per port to maintain same pinout as SP301. The LTC1322 and LTC1335 each provide two drivers and two receivers per port ...
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... LTC1320 AppleTalk transceiver in a typical LocalTalk configuration. Figure 16 shows a typical direct-wire con- nection with the LTC1335 as the DCE transceiver and the LTC1320 as the DTE transceiver. The LTC1321/LTC1322/ LTC1335 RS485 mode is capable of meeting all AppleTalk protocol specifications. LocalTalk and AppleTalk are registered trademarks of Apple Computer, Inc. ...
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... RFI 100pF Figure 15. Apple LocalTalk Implemented Using LTC1320 and LTC1335 Transceivers 120 120 22 100pF Figure 16. AppleTalk Direct Connect Using LTC1320 for DTE and LTC1335 for DCE Transceivers LTC1321/LTC1322/LTC1335 RFI 1k 3 RFI 4 RFI 5 RFI 6 SEL1 LTC1335 ...
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... LTC1321/LTC1322/LTC1335 TYPICAL PPLICATI A typical EIA562/RS232 interface application is shown in Figure 17 with LTC1322. A typical EIA562 interface appli- cation with LTC1335 is shown in Figure 18. A typical connection for RS485 transceiver is shown in Figure 19. A twisted pair of wires connects drivers 1/2 LTC1322 17 EIA562 RS232 ...
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... LTC1322/LTC1335 RX OUT 100 5 2 100 3 Figure 20. Typical Connection for RS422 Interface 100 3 1/2 LTC1322/LTC1335 Figure 21. Typical Cable Repeater for RS422 Interface LTC1321/LTC1322/LTC1335 1/2 LTC1322/LTC1335 OUT ENABLE 1321/22/35 F20 OUT 5 1321/22/35 F21 17 ...
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... Figure 22. Typical EIA562/RS232 to RS422 Level Translator EIA562/RS232* LTC1322/LTC1335 8 TX OUT Figure 23. Typical Cable Extension for EIA562/RS232 Interface 18 S Using two LTC1321/LTC1335 as level translators, the EIA562/RS232 interface distance can be extended to 4000 feet with twisted wires (Figure 23). is between 6. LTC1322/LTC1335 ...
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... S Package 24-Lead Plastic SOL NOTE 0.093 – 0.104 (2.362 – 2.642) 0° – 8° TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) LTC1321/LTC1322/LTC1335 1.265 (32.131 0.065 (1.651) TYP 0.018 ± ...
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... LTC1321/LTC1322/LTC1335 NORTHEAST REGION Linear Technology Corporation One Oxford Valley 2300 E. Lincoln Hwy.,Suite 306 Langhorne, PA 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation 266 Lowell St., Suite B-8 Wilmington, MA 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 FRANCE Linear Technology S.A.R.L. Immeuble "Le Quartz" ...