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ISL33337EIRZ-T7A Datasheet(PDF) 10 Page - Intersil Corporation |
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ISL33337EIRZ-T7A Datasheet(HTML) 10 Page - Intersil Corporation |
10 / 23 page ISL33334E, ISL33337E 10 FN8776.1 October 21, 2016 Submit Document Feedback FIGURE 4A. TEST CIRCUIT FIGURE 4B. MEASUREMENT POINTS FIGURE 4. RS-485 DRIVER ENABLE AND DISABLE TIMES FIGURE 5A. TEST CIRCUIT FIGURE 5B. MEASUREMENT POINTS FIGURE 5. RS-485 RECEIVER PROPAGATION DELAY FIGURE 6A. TEST CIRCUIT FIGURE 6B. MEASUREMENT POINTS FIGURE 6. RS-485 RECEIVER ENABLE AND DISABLE TIMES Test Circuits and Waveforms (Continued) D DE485 DI CL 500Ω Z Y VCC GND SW FOR SHDN TESTS, SWITCH SHDN RATHER THAN DE485 PARAMETER SHDN/DE485 OUTPUT DI SW CL (pF) tHZ 1/- Y/Z 1/0 GND 15 tLZ 1/- Y/Z 0/1 VCC 15 tZH 1/- Y/Z 1/0 GND 100 tZL 1/- Y/Z 0/1 VCC 100 tZH(SHDN) -/1 Y/Z 1/0 GND 100 tZL(SHDN) -/1 Y/Z 0/1 VCC 100 SIGNAL GENERATOR OUT (Y, Z) 3V 0V 50% 50% VOH 0V 2.3V VOH - 0.5V tHZ OUT (Y, Z) VCC VOL 2.3V VOL + 0.5V tLZ DE485 OUTPUT HIGH OUTPUT LOW tZL tZH tZH(SHDN) tZL(SHDN) (SHDN FOR SHDN) ENABLED SIGNAL GENERATOR R RO RE485 A B 0V 15pF RO +1.5V -1.5V tPLH 0V 0V VCC 0V 1.5V 1.5V tPHL A 1kΩ VCC GND SW FOR SHDN TESTS, SWITCH SHDN RATHER THAN RE485 PARAMETER SHDN/RE485 ASW tHZ 1/- +1.5V GND tLZ 1/- -1.5V VCC tZH 1/- +1.5V GND tZL 1/- -1.5V VCC tZH(SHDN) -/0 +1.5V GND tZL(SHDN) -/0 -1.5V VCC SIGNAL GENERATOR R RO A B 15pF RE485 RO 3V 0V 1.5V 1.5V VOH 0V 1.5V VOH - 0.5V tHZ RO VCC VOL 1.5V VOL + 0.5V tLZ RE485 OUTPUT HIGH OUTPUT LOW tZL tZH tZL(SHDN) tZH(SHDN) 3V 0V 1.5V SHDN (FOR SHDN TESTS) ENABLED |
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