LTC1334 LINER [Linear Technology], LTC1334 Datasheet
LTC1334
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LTC1334 Summary of contents
Page 1
... ALL CAPACITORS: 0.1 F MONOLITHIC CERAMIC TYPE LTC1334 Single 5V RS232/RS485 U 1334 is a low power CMOS bidirectional trans LTC1334 OUT 18 DR ENABLE OUT OUT CC2 5V LTC1334 • TA01 1 ...
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... TOP VIEW NUMBER + – LTC1334CG LTC1334CNW LTC1334CSW /DE1 LTC1334IG LTC1334ISW 9 20 ON/OFF /DE2 PACKAGE 28-LEAD PDIP WIDE SW PACKAGE ...
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... Driver Output to Output SKEW Driver Rise and Fall Time r f The denotes specifications which apply over the full operating = 5V 0.1 F (Notes CONDITIONS – 12V, LTC1334C CM –7V V 7V, LTC1334I – 12V IN – ...
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... See Applications Information CC RS485 Receiver Skew t – Temperature PLH PHL 100 125 –50 – TEMPERATURE ( C) LTC1334 • TPC02 MAX UNITS 140 ns 140 100 125 LTC1334 • TPC03 ...
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... LTC1334 RS232 Receiver Input Threshold Voltage vs Temperature 2 1.8 INPUT HIGH 1.6 1.4 1.2 INPUT LOW 1.0 0.8 –50 – 100 125 TEMPERATURE ( C) LTC1334 • TPC06 Supply Current vs Temperature (RS232 LOAD SEL 1 = SEL 2 = HIGH – 125 – ...
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... OUT –50 – TEMPERATURE ( C) Driver Output Leakage Current (Disable/Shutdown) vs Temperature 500 450 400 350 300 250 200 150 100 –50 – 100 125 TEMPERATURE ( 100 125 LTC1334 • TPC15 125 75 100 LTC1334 • TPC18 ...
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... ON/OFF RS232 Receiver Mode OUTPUTS ON/OFF LTC1334 – – /DE1 ...
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... DE1 SEL1 = SEL2 = DE2 DE2 GND LTC1334 • BD02 C2 ...
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... V(Z) – V(Y) DIFF 50% 10% 1 SKEW Figure 6. RS485 Driver Propagation Delays LTC1334 500 DR OUT 15pF C L LTC1334 • F03 Figure 3. RS485 Driver Output Enable/Disable Timing Test Load 0V 0V SEL SEL 15pF IN OUT LTC1334 • F05 Figure 5. RS232 Receiver Timing Test Circuit 1 ...
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... INPUT PLH OUTPUT 1.5V Figure 8. RS485 Receiver Propagation Delays 1.5V 1.5V t PHL 0V Figure 9. RS232 Driver Propagation Delays 1.7V 1.3V t PHL 0.8V Figure 10. RS232 Receiver Propagation Delays 1. 0. 0.5V LTC1334 • F07 0V t PHL 1.5V LTC1334 • F08 t PLH LTC1334 • F09 0V t PLH 2.4V LTC1334 • F10 ...
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... S I FOR ATIO A Basic Theory of Operation The LTC1334 has two interface ports. Each port may be configured as a pair of single-ended RS232 transceivers differential RS485 transceiver by forcing the port’s selection input to a low or high, respectively. The LTC1334 provides two RS232 drivers and two RS232 receivers or one RS485 driver and one RS485 receiver per port ...
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... DR ENABLE Each receiver in the LTC1334 is designed to present one 28 0 unit load (5k nominal for RS232 and 12k minimum for RS485) to the cable. Some RS485 and RS422 applications 5V 0.1 F call for terminations, but these are only necessary at two ...
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... A typical twisted-pair line repeater is shown in Figure 16. As data transmission rate drops with increased cable length, repeaters can be inserted to improve transmission rate or to transmit beyond the RS422 4000-foot limit. The LTC1334 can be used to translate RS232 to RS422 interface levels or vice versa as shown in Figure 17. One 1/2 LTC1334 DR ENABLE ...
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... SHDN 18 TXO 8 RXEN 17 RXI 9 RXO 16 RXI 10 RXO – 15 RXD 11 RXDO + 14 RXD 12 13 Figure 20. AppleTalk Direct Connect Using the LTC1323 DTE and the LTC1334 for DCE Transceivers 120 1k 120 1k FERRITE BEAD 100pF 100pF FERRITE ...
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... MIN 0.035 – 0.080 0.125 (0.889 – 2.032) (3.175) MIN 0.100 (2.54) BSC LTC1334 10.07 – 10.33* (0.397 – 0.407 7.65 – 7.90 (0.301 – 0.311 1.73 – 1.99 (0.068 – 0.078) 0.05 – 0.21 (0.002 – 0.008) G28 SSOP 1098 1 ...
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... LTC1334 PACKAGE DESCRIPTION 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 45 (0.254 – 0.737) 0.009 – 0.013 NOTE 1 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. ...