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SP489EEP Datasheet(PDF) 5 Page - Sipex Corporation |
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SP489EEP Datasheet(HTML) 5 Page - Sipex Corporation |
5 / 10 page 5 SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers © Copyright 2000 Sipex Corporation PARAMETER MIN. TYP. MAX. UNIT CONDITIONS PROPAGATION DELAY Receiver Input to Output C L = 15pF; Figure 1, 3 Low to HIGH (t PLH)45 60 ns High to LOW (t PHL)45 60 ns Differential Receiver Skew (t SKD) 5 ns t SKD = t PHL - tPLH RECEIVER ENABLE To Output HIGH 30 60 ns C L = 15pF; Figures 2 and 4 (S2 closed) To Output LOW 35 60 ns CL = 15pF; Figures 2 and 4 (S1 closed) RECEIVER DISABLE From Output LOW 35 60 ns CL = 15pF; Figures 2 and 4 (S1 closed) From Output HIGH 30 60 ns CL = 15pF; Figures 2 and 4 (S2 closed) Figure 4. Receiver Enable/Disable Timing 3V 0V 5V VOH 0V Output normally low F = 1MHZ: tr < 10ns: tf < 10ns tZL tLZ EN VOL 1.5V 1.5V 1.5V 0.5V 1.5V 0.5V Output normally high RO tZH RO tHZ Figure 3. Receiver Propagation Delays F = 1MHZ: tr < 10ns: tf < 10ns tPHL tPLH VOL 0V 0V 1.5V RO VOH 1.5V –VOD +VOD Input A–B AC PARAMETERS V CC = 5V±5%; typicals at 25°C; TAMB = 25°C unless otherwise noted. |
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