LT1331 Linear Technology, LT1331 Datasheet
LT1331
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LT1331 Summary of contents
Page 1
... While shut down, the drivers and receivers assume high impedance output states. The LT1331 is fully compliant with all EIA-RS232 specifi- cations when V compatible with all known interface circuits. Special bipo- lar construction techniques protect the drivers and receiv- ers beyond the fault conditions stipulated for RS232 ...
Page 2
... TOP VIEW ORDER PART NUMBER – – LT1331CG 4 25 DRIVER 1 IN LT1331CNW 5 24 RX1 OUT LT1331CSW 6 23 DRIVER RX2 OUT 8 21 RX3 OUT 9 20 RX4 OUT 10 19 DRIVER 3 IN RX5 OUT 11 18 (LOW- GND ...
Page 3
... Note 7: For receiver delay measurements, C set between the receiver’s input logic threshold and the output transition = 3V, unless ON/OFF to standard TTL/CMOS logic threshold (t to 0.8V). Note 8: Data rate operation guaranteed by slew rate, short-circuit current and propagation delay tests. 3V. LT1331 MIN TYP MAX UNITS 5.0 6.5 V 3.7 4 ...
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... LT1331 W U TYPICAL PERFOR A Driver Short-Circuit Current – –55 – 100 125 TEMPERATURE (°C) 1331 G01 Driver Leakage in Shutdown 100 30V OUT –30V OUT 0.1 50 125 –55 – 100 TEMPERATURE (°C) ...
Page 5
... LOW-Q RX OUT, are fully short-circuit pro- tected to ground, V determined by the choice of power supply V – V (Pin 28): Negative Supply Output. V 2.5V). This pin requires an external charge storage capacitor, chosen to minimize ripple on V value of 0 recommended. LT1331 supply may be turned off Output voltage levels are – ...
Page 6
... LT1331. power L drops Operation V = 3.3V operation of the LT1331 results in lower driver CC output swing than with V when operated with V least –2.7V to 3.7V, with typical swing being –3.3V to 4V. This insures compatibility with all commonly used RS232 and RS562 interface circuits. Table 1 summarizes the receiver input threshold specifications for RS232 circuits from many manufacturers ...
Page 7
... U ESD PROTECTIO The RS232 line inputs of the LT1331 have on-chip protec- tion from ESD transients up to 10kV. The protection structures act to divert the static discharge safely to system ground. In order for the ESD protection to function effectively, the power supply and ground pins of the LT1331 must be connected to ground through low imped- ances ...
Page 8
... DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE TYPICAL PPLICATI + 0 LT1331 DRIVER 1 OUT 6 23 RX1 DRIVER 2 OUT 8 21 RX2 IN TO LINE 9 20 RX3 IN ...