6 AC Read Characteristics
| Parameter | Symbol | AT28C256‑15 | AT28C256‑20 | AT28C256‑25 | Units | |||
|---|---|---|---|---|---|---|---|---|
| Min. | Max. | Min. | Max. | Min. | Max. | |||
| Address to Output Delay | tACC | — | 150 | — | 200 | — | 250 | ns |
| CE to Output Delay | tCE(1) | — | 150 | — | 200 | — | 250 | ns |
| OE to Output Delay | tOE(2) | 0 | 70 | 0 | 80 | 0 | 100 | ns |
| CE or OE to Output Float | tDF(3,4) | 0 | 50 | 0 | 55 | 0 | 60 | ns |
|
Output Hold from OE, CE or Address, whichever occurred first | tOH | 0 | — | 0 | — | 0 | — | ns |
Note:
- CE may be delayed up to tACC‑tCE after the address transition without impact on tACC.
- OE may be delayed up to tCE‑tOE after the falling edge of CE without impact on tCE or by tACC‑tOE after an address change without impact in tACC.
- tDF is specified from OE or CE, whichever occurs first (CL = 5 pF).
- This parameter is characterized and is not 100% tested.