MIL-M-38510-203 Microcircuits, Digital, 1024 Bit Schottky, Bipolar, Programmable Read-Only Memory Prom, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, programmable read-only memory PROM microcircuits which employ thin film nichrome NiCr resistors, tungsten W, titanium tungsten TiW, or zapped vertical emitter ZVE as the fusible link or programming element. Two product assurance classes and a choice of case outlines and lead finishes are provided and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

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MIL-M-38510/203E

Word no.

Enable

Address

Data

cE 1

cE 2

NoTES:

1. NA = Not applicable.

2. x = Input may be high level, low level, or open circuit.

3. oc = open circuit (high resistance output).

4. Program readout can only be accomplished with both enable inputs at low level.

5. The outputs for an unprogrammed device shall be high for circuits A and B, and shall be low for circuit c and G.

FIGURE 2. Truth table (unprogrammed).