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| Datasheet |
 M27256 Datasheet - 554.38KB |
| Part Number | Description |
|---|---|
 Solid State Optronics |
Relay The M272 is a bi-directional, single-pole, single-throw, normally closed multipurpose solid-state relay in a miniature 4-pin small outline package. It is designed to be a cost-effective replacement of reed relays in low voltage applications. The relay consists of an integrated circuit that drives two rugged source-to-source depletion type DMOS transistors - optically coupled to a light emitting diode. The output MOS transistors are protected with free-wheeling diodes that can handle up to 1.5A of inrush current, making the relay ideal for switching lamps and highly inductive loads. FEATURES APPLICATIONS • 1 Form B (normally closed) SSR • Low input control power consumption (1.5mA TYP) • ... |
 STMicroelectronics |
NMOS 256K 32K x 8 UV EPROM The M27256 is a 262,144 bit UV erasable and electrically programmable memory EPROM. It is organized as 32.768 words by 8 bits. The M27256 is housed in a 28 pin Window Ceramic Frit-Seal Dual-in-Line package. The transparent lid allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure. Figure 1. Logic Diagram VCC VPP 15 A0-A14 8 Q0-Q7 E M27256 Table 1. Signal Names A0 - A14 Q0 - Q7 E G VPP VCC VSS Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground G VSS AI00767B March 1995 1/10 M27256 Table 2. Absolute Maximum Ratings Symbol TA TB... |