scope:

This drawing documents five product assurance classes, Class D (lowest reliability), class E, (exceptions), class G (lowest high reliability), class H (high reliability), and class K, (highest reliability) and a choice of case outlines and lead finishes are available and are reflected in the Part or Identifying Number (PIN). When available, a choice of radiation hardness assurance levels are reflected in the PIN.

The PIN shall be as shown in the following example:

Device classes H and K RHA marked devices shall meet the MIL-PRF-38534 specified RHA levels and shall be marked with the appropriate RHA designator. A dash (-) indicates a non-RHA device.

The device type(s) identify the circuit function as follows:

Device type Generic number Circuit function Access time 01 WMS256K16-35DL SRAM, 256K × 16-bit 35ns 02 WMS256K16-25DL SRAM, 256K × 16-bit 25ns 03 WMS256K16-20DL SRAM, 256K × 16-bit 20ns

This device class designator shall be a single letter identifying the product assurance level as follows:

Device class Device performance documentation D, E, G, H, or K Certification and qualification to MIL-PRF-38534

The case outline(s) are as designated in MIL-STD-1835 and as follows:

Outline letter Descriptive designator Terminals Package style M See figure 1 44 Ceramic SOJ

The lead finish shall be as specified in MIL-PRF-38534.

Supply voltage range (V_CC)............................. −0.5 V to +7.0 V Input voltage range.................................... −0.5 to +7.0 V Power Dissapation(P_D).................................. 1.6W Storage temperature range.............................. −65° C to +150° C Lead temperature (soldering, 10 seconds)............... +300° C Supply voltage range (V_CC)............................. −0.5 V to +7.0 V Data retention........................................ 10 Years minimum Endurance.............................................. 10,000 cycles minimum

Supply voltage range (V_CC)............................. +4.5 V dc to +5.5 V dc Input low voltage range (V_IL).......................... −0.3 V dc to +0.8 V dc Input high voltage range(V_IH).......................... +2.2 V dc Vcc+0.5 V dc Output voltage, high minimum (V_OH)..................... +2.4 V dc Output voltage, low maximum (V_OL)...................... −0.5 V to +7.0 V Case operating temperature range (T_C).................. −55°C to + 125°C

intended Use:

Microcircuits conforming to this drawing are intended for use for Government microcircuit applications (original equipment), design applications, and logistics purposes.