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AM27C256-45PC Scheda tecnica(PDF) 10 Page - Advanced Micro Devices |
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AM27C256-45PC Scheda tecnica(HTML) 10 Page - Advanced Micro Devices |
10 / 12 page 10 Am27C256 AC CHARACTERISTICS Caution: Do not remove the device from (or insert it into) a socket or board that has VPP or VCC applied. Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP. 2. This parameter is sampled and not 100% tested. 3. Switching characteristics are over operating range, unless otherwise specified. 4. See Figure 3 and Table 1 for test specifications. SWITCHING WAVEFORMS Notes: 1. OE# may be delayed up to tACC – tOE after the falling edge of the addresses without impact on tACC. 2. tDF is specified from OE# or ‘CE#, whichever occurs first. PACKAGE CAPACITANCE Notes: 1. This parameter is only sampled and not 100% tested. 2. TA = +25°C, f = 1 MHz. Parameter Symbols Description Test Setup Am27C256 Unit JEDEC Standard -45 -55 -70 -90 -120 -150 -200 -255 tAVQV tACC Address to Output Delay CE#, OE# = VIL Max 45 55 70 90 120 150 200 250 ns tELQV tCE Chip Enable to Output Delay OE# = VIL Max 45 55 70 90 120 150 200 250 ns tGLQV tOE Output Enable to Output Delay CE# = VIL Max 303540 4050 50 5050 ns tEHQZ tGHQZ tDF (Note 2) Chip Enable High or Output Enable High to Output High Z, Whichever Occurs First Max 252525 2530 30 3030 ns tAXQX tOH Output Hold Time from Addresses, CE# or OE#, Whichever Occurs First Min 00 000 000 ns Addresses CE# OE# Output 08007I-9 Addresses Valid High Z High Z tCE Valid Output 2.4 0.45 2.0 0.8 2.0 0.8 tACC (Note 1) tOE tDF (Note 2) tOH Parameter Symbol Parameter Description Test Conditions CDV028 PL 032 PD 028 Unit Typ Max Typ Max Typ Max CIN Input Capacitance VIN = 0 8 12 8 12 6 10 pF COUT Output Capacitance VOUT = 0 8 12812 8 10 pF |
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