UT28F256T-40UCA 参数 Datasheet PDF下载

256K PROM

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Total Dose:

( ) = Total dose characteristics neither tested nor guaranteed

Lead

(A)

(C)

(X)

Finish:

= Solder

= Gold

= Optional

Screening:

(C) = Mil Temp

(P) = Prototype

Package Type:

(P) = 28-lead DIP (contact factory)

(U) = 28-lead Flatpack

Access Time:

(40) = 40ns access time, TTL compatible inputs, CMOS/TTL compatible outputs

(45) = 45ns access time, TTL compatible inputs, CMOS/TTL compatible outputs

Device Type Modifier:

(T) = TTL compatible inputs and CMOS/TTL compatible outputs

Device Type:

(28F256) = 32Kx8 One Time Programmable PROM

Notes:

1. Lead finish (A,C, or X) must be specified.

2. If an “X” is specified when ordering, then the part marking will match the lead finish and will be either “A” (solder) or “C” (g old).

3. Military Temperature Range flow per UTMC Manufacturing Flows Document. Radiation characteristics are neither tested nor guaranteed and may

not be specified.

4. Prototype flow per UTMC Manufacturing Flows Document. Devices have prototype assembly and are tested at 25°C only. Radiation characteristics

are neither tested nor guaranteed and may not be specified.

5. Check factory for availability of 45ns part.

6. Lead finish: Factory programming either solder or gold. Field programming gold only.

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