Rainbow-electronics AT27C2048 Manual do Utilizador descarregar pdf (Página 5)

AT27C2048

AC Waveforms for Read Operation

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Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.

2. OE may be delayed up to t

- t

after the falling edge of CE without impact on t

3. OE may be delayed up to t

ACC

- t

after the address is valid without impact on t

ACC

4. This parameter is only sampled and is not 100% tested.

5. Output float is defined as the point when data is no longer driven.

Input Test Waveforms and

Measurement Levels

For -55 devices only:

, t

< 5 ns (10% to 90%)

For -70, -90, -12 and -15 devices:

, t

< 20 ns (10% to 90%)

Output Test Load

Note: CL = 100 pF including jig capacitance, except for the -55

devices, where CL = 30 pF.

Note: 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.

Pin Capacitance

f = 1 MHz, T = 25°C

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Symbol Typ Max Units Conditions

410pFV

= 0V

OUT

812pFV

OUT

= 0V

1 2 3 4 5 6 7 8 9 10 11 12

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