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5962R9672302VCC Datasheet(PDF) 6 Page - Intersil Corporation |
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5962R9672302VCC Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 8 page 6 the grounded input of the transmitter, and is less than 25V negative with respect to the transmitter VCC. The current mode system is totally unaffected by ground differential noise of +2V at frequencies as high as 1MHz. Propagation Delay The worst case propagation delay of a transmitter and receiver, connected as shown in Figure 4, can be determined by adding the maximum delay shown on the data sheet for the transmitter and receiver. These overall switching characteristics are shown in Table B. For the entire system, however, the propagation delay of the transmission line must also be considered. This delay, of course, depends on the length of the line and the characteristics of the line, but in general, delays of between 1.5ns and 3.0ns per foot can be expected. TABLE B. OVERALL TRANSMITTER/RECEIVER SWITCHING CHARACTERISTICS CHARACTERISTICS -55oC TO 125oC HS-245RH, HS-246RH HS-248RH UNITS MIN TYP MAX Propagation Delay TPLH -18 40 ns Propagation Delay TPHL -18 40 ns Duty Cycle Distortion TPLH - TPHL - 2 15 ns NOTE: VCC = +5V, VEE = -5V. Schematics FIGURE 6. HS-245RH FIGURE 7. HS-246RH, HS-248RH NOTES: 1. HS-246RH does not have 6K output pull-up resistors. 2. HS-248RH does not have 50 Ω input termination resistors. φ1 IN T1 2.7K 2.7K 2.0K 2.0K 380 Ω 12 3 4 300 Ω T2 56 8 9 T3 10 11 12 13 14VCC φ1 OUT φ2 OUT φ2 IN φ1 IN φ1 OUT φ2 OUT φ2 IN φ1 IN φ1 OUT φ2 OUT φ2 IN R1 -INPUT (R1) OUTPUT 3 (R1) +INPUT 2 7 2.7K 4.1K 6K 1 -INPUT 6 (R2) +INPUT 5 14VCC 4 (R2) -INPUT 10 +INPUT 9 13VCC 8 (R3) (R3) OUTPUT (R2) OUTPUT (R3) 12VEE 11VEE R2 R3 GND 50 Ω (R1) 50 Ω HS-245RH, HS-246RH, HS-248RH |
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