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LTC1338I Datasheet(PDF) 5 Page - Linear Technology |
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LTC1338I Datasheet(HTML) 5 Page - Linear Technology |
5 / 8 page 5 LTC1338 PI FU CTIO S DRIVER IN: RS232 Driver Input Pins. Inputs are TTL/ CMOS compatible. Inputs should not be allowed to float. Tie unused inputs to VCC. DRIVER OUT: Driver Outputs at RS232 Voltage Levels. Outputs are in a high impedance state when in SHUT- DOWN, RECEIVER ALIVE mode or VCC = 0V. The driver outputs are protected against ESD to ±10kV for human body model discharges. RX IN: Receiver Inputs. These pins can be forced to ±25V without damage. The receiver inputs are protected against ESD to ±10kV for human body model discharges. Each receiver provides 0.4V of hysteresis for noise immunity. RX OUT: Receiver Outputs with TTL/CMOS Voltage Lev- els. Outputs are in a high impedance state when in SHUT- DOWN or RECEIVER DISABLE mode to allow data line sharing. Table 1. Functional Description MODE RX ENABLE DR ENABLE DRIVERS RECEIVERS ICC (µA)(TYP) SHUTDOWN 0 0 All driver outputs are All receiver outputs are 0.2 high impedance. high impedance. Receiver Disable 0 1 All drivers alive. All receiver outputs are 500 high impedance. RECEIVER ALIVE 1 0 All driver outputs are All receivers alive. 50 high impedance. Normal 1 1 All drivers alive. All receivers alive. 500 TI E WAVEFOR S G WITCHI S Figure 1. Driver Propagation Delay Timing Figure 2. Receiver Propagation Delay Timing 1.4V 0V VCC 0V V+ V– 0V DRIVER INPUT DRIVER OUTPUT 1.4V t HLD t LHD LTC1338 • F01 0.8V VCC 0V 2.4V RX INPUT RX OUTPUT 1.3V t HLR 1.7V t LHR LTC1338 • F02 VCC 0V |
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Similar Description - LTC1338I |
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