LTC1545C Linear Technology, LTC1545C Datasheet
LTC1545C
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LTC1545C Summary of contents
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... LTC1344A software-selectable cable termination chip or by using existing discrete designs. The LTC1545 runs from a 5V supply and the charge pump on the LTC1543. The part is available in a 36-lead SSOP surface mount package. , LTC and LT are registered trademarks of Linear Technology Corporation. DCD DTR RTS RXD ...
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... Transmitter Output ..................................... Indefinite Receiver Output .......................................... Indefinite V .................................................................. 30 sec EE Operating Temperature Range LTC1545C .............................................. LTC1545I ........................................... – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are at T ...
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... Input to Output PLH t Input to Output PHL t Input to Output Difference, t – t PLH CONDITIONS D1, D2, D3, D4, D5 M0, M1, M2, DCE, D4ENB, R4EN = GND (LTC1545C) M0, M1, M2, DCE, D4ENB, R4EN = GND (LTC1545I) M0, M1, M2, DCE, D4ENB, R4EN = – 4mA 4mA ...
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LTC1545 ELECTRICAL CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are 5V 8V – 7V for V.28, – 5.5V for V.10, V.11 (Notes ...
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PIN FUNCTIONS V (Pins 1, 19): Positive Supply for the Transceivers. CC 4.75V V 5.25V. Connect capacitor to ground (Pins 2, 20): Positive Supply Voltage for V.28. Con- DD nect to V ...
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LTC1545 TEST CIRCUITS Figure 3. V.10/V.28 Driver Test Circuit W U ODE SELECTIO LTC1545 MODE NAME M2 M1 Not Used (Default V.11 RS530A 0 0 RS530 V.35 1 ...
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U W SWITCHI WAVEFOR S V OD2 0V B – A –V OD2 t PLH 1. PHL – 1.5V V ...
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LTC1545 U U APPLICATIONS INFORMATION DTE SERIAL LTC1543 CONTROLLER D1 TXD D2 SCTE D3 R1 TXC RXC R2 RXD R3 LTC1545 RTS D1 DTR D2 D3 DCD R1 DSR R2 R3 CTS Figure ...
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U U APPLICATIONS INFORMATION DCE/ DTE (DATA LTC1543 DCE/DTE 14 DCE/DTE LTC1545 M0 15 D4ENB 16 R4EN (DATA) Figure 10: Single Port DCE V.35 Mode Selection in the ...
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LTC1545 U U APPLICATIONS INFORMATION BALANCED INTERCONNECTING GENERATOR CABLE TERMINATION ' Figure 11. Typical V.10 Interface I Z –10V –3V 3V –3.25mA Figure 12. V.10 Receiver Input Impedance ' 20k 6k ...
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U U APPLICATIONS INFORMATION BALANCED INTERCONNECTING CABLE GENERATOR TERMINATION ' Figure 16. Typical V.28 Interface ' A A LTC1344A 20k 51 124 R2 R4 51.5 20k B ...
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LTC1545 U U APPLICATIONS INFORMATION Any mismatch in the driver rise and fall times or skew in the driver propagation delays will force current through the center termination resistor to ground, causing a high frequency common mode spike on the ...
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U TYPICAL APPLICATIONS CHARGE PUMP LTC1543 5 TXD D1 6 SCTE TXC 9 R2 RXC 10 RXD R3 11 ...
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LTC1545 U TYPICAL APPLICATIONS CHARGE PUMP LTC1543 5 RXD D1 6 RXC TXC 9 R2 SCTE 10 TXD R3 ...
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... Figure 24. Controller-Selectable Multiprotocol DTE/DCE Port with DB-25 Connector Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Two RS232 Driver/Receiver Pairs or One RS485 Driver/Receiver Pair 12.67 – 12.93* (0.499 – 0.509 7.65 – 7.90 (0.301 – 0.311 1.73 – 1.99 (0.068 – 0.078) 0.05 – 0.21 (0.002 – 0.008) G36 SSOP 1098 1545fa LT/TP 1199 2K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1998 ...