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27C512A-12ITS Datasheet(PDF) 3 Page - Microchip Technology |
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27C512A-12ITS Datasheet(HTML) 3 Page - Microchip Technology |
3 / 12 page © 1996 Microchip Technology Inc. DS11173E-page 3 27C512A TABLE 1-3: READ OPERATION AC CHARACTERISTICS FIGURE 1-1: READ WAVEFORMS AC Testing Waveform: VIH = 2.4V and VIL = .45V; VOH = 2.0V and VOL = 0.8V Output Load: 1 TTL Load + 100 pF Input Rise and Fall Times: 10 ns Ambient Temperature: Commercial: Tamb = 0˚C to +70˚C Industrial: Tamb = -40˚C to +85˚C Extended (Automotive): Tamb = -40˚C to +125˚C Parameter Sym 27C512-90* 27C512-10* 27C512-12 27C512-15 Units Conditions Min Max Min Max Min Max Min Max Address to Output Delay tACC — 90 — 100 — 120 — 150 ns CE = OE/ VPP = VIL CE to Output Delay tCE — 90 — 100 — 120 — 150 ns OE/VPP = VIL OE to Output Delay tOE —40—40—50—60 ns CE = VIL OE to Output High Impedance tOFF 035035040045 ns Output Hold from Address, CE or OE/ VPP, whichever occurred first tOH 0—0—0—0— ns *90/10 AC Testing Waveforms: VIH = 3.0V and VIL = 0V; VOH = 1.5V and VOL = 1.5V Output Load: 1 TTL Load + 30 pF Address CE VIH VIL VIH VIL VIH VIL OE Outputs O0 - O7 VOH VOL Address Valid tCE(2) tOE(2) High Z Valid Output tACC (1) tOFF is specified for OE or CE, whichever occurs first (2) OE may be delayed up to t CE - t OE after the falling edge of CE without impact on tCE (3) This parameter is sampled and is not 100% tested. High Z tOH tOFF(1,3) Notes: |
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