| AO-A16 | Address Inputs |
| DQO-DQ7 | Data Input/Output |
| E1 | Chip Enable 1 |
| E2 | Chip Enable 2 |
| | Output Enable |
| w | Write Enable |
| Vcc | Supply Voltage |
| Vss | Ground |
| NC | Not Connected Internally |
| |
1. TOLERANCE AND TYPE NUMBER DESIGNATION The type numbers listed have zener voltage min/max limits as shown and have a standard tolerance on the nominal zener voltage of+5%. 2. AVAILABILITY OF SPECIAL DIODES For detailed information on price, availability and delivery of nominal zener voltages between the voltages shown and tighter voltage tolerances, contact your nearest ON Semiconductor representative. 3. ZENER VOLTAGE (Vz) MEASUREMENT Vz measured after the test current has been applied t0 40 +10 msec, while maintaining the lead temperature (TL) at 301C +1YC, 318" from the diode body. 4. ZENERIMPEDANCE (Zz) DERIVATION The zener impedance is derived from l kHz cycle AC voltage, which results when an AC current having an rms value equal t0 10% of the DC zener current (IZT or IZK) iS superimposed on IZT or IZK. 5. SURGE CURRENT (IR) NON-REPETITIVE The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of l/2 square wave or eqivalent sine wave pulse of l/120 second duration superimposed on the test current, IZT. However, actual device capability is as described in Figure 5 0f the General Data - D0-41 Glass.
