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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PI74FCT652T датащи(PDF) 6 Page - Pericom Semiconductor Corporation |
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PI74FCT652T датащи(HTML) 6 Page - Pericom Semiconductor Corporation |
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6 / 7 page  6 PS2022A 03/11/96 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT646/648/651/652T (25 Ω Ω Ω Ω Ω Series) P174FCT2646T/2652T OCTAL REGISTERED TRANSCEIVERS PI74FCT646/2646T Switching Characteristics over Operating Range 646T/2646T 646AT/2646AT 646CT 646DT Com. Com. Com. Com. Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Unit tPLH Propagation Delay CL = 50 pF 2.0 7.5 2.0 6.3 1.5 5.4 1.5 4.8 ns tPHL Bus to Bus RL = 500 Ω tPZH Output Enable Time 2.0 14.0 2.0 9.8 1.5 7.8 1.5 7.3 ns tPZL G, DIR to Bus tPHZ Output Disable Time(3) 2.0 9.0 2.0 6.3 1.5 6.3 1.5 6.3 ns tPLZ G, DIR to Bus tPLH Propagation Delay 2.0 9.0 2.0 6.3 1.5 5.7 1.5 5.2 ns tPHL Clock to Bus tPLH Propagation Delay 2.0 9.5 2.0 7.7 1.5 6.2 1.5 5.8 ns tPHL SBA or SAB to Bus tSU Setup Time HIGH or 4.0 — 2.0 — 2.0 — 2.0 — ns LOW, BUS to Clock tH Hold Time HIGH or 2.0 — 1.5 — 1.5 — 1.5 — ns LOW, Bus to Clock tW Clock Pulse Width(3) 6.0 — 5.0 — 5.0 — 5.0 — ns HIGH or LOW PI74FCT648T Switching Characteristics over Operating Range 648T 648AT 648CT 648DT Com. Com. Com. Com. Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Unit tPLH Propagation Delay CL = 50 pF 2.0 7.5 2.0 6.3 1.5 5.4 1.5 4.8 ns tPHL Bus to Bus RL = 500 Ω tPZH Output Enable Time 2.0 14.0 2.0 9.8 1.5 7.8 1.5 7.3 ns tPZL G, DIR to Bus tPHZ Output Disable Time(3) 2.0 9.0 2.0 6.3 1.5 6.3 1.5 6.3 ns tPLZ G, DIR to Bus tPLH Propagation Delay 2.0 9.0 2.0 6.3 1.5 5.7 1.5 5.2 ns tPHL Clock to Bus tPLH Propagation Delay 2.0 9.5 2.0 7.7 1.5 6.2 1.5 5.8 ns tPHL SBA or SAB to Bus tSU Setup Time HIGH or 4.0 — 2.0 — 2.0 — 2.0 — ns LOW, BUS to Clock tH Hold Time HIGH or 2.0 — 1.5 — 1.5 — 1.5 — ns LOW, Bus to Clock tW Clock Pulse Width(3) 6.0 — 5.0 — 5.0 — 5.0 — ns HIGH or LOW Notes: 1. See test circuit and wave forms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter guaranteed but not production tested. |
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