Austin Semiconductor AS27C256
The AS27C256 series is a set of 262,144 bit, ultraviolet-light erasable, electrically programmable read-only memories. These devices are fabricated using power-saving CMOS technology for high speed and simple interface with MOS and bipolar circuits. Each output can drive one Series 54 TTL circuit without external resistors.| Part No. | AS27C256 |
|---|---|
| Datasheet | AS27C256 Download |
| Manufacturer |  Austin Semiconductor |
| Description | 256K UVEPROM UV Erasable Programmable Read-Only Memory |
| Buy | Stock & Price |
FEATURES
●●
●
●
●
●
●
● Organized 32,768 x 8 Single +5V ±10% power supply Pin-compatible with existing 256K ROM’s and EPROM’s All inputs/outputs fully TTL compatible Power-saving CMOS technology Very high-speed FLASHRITE Pulse Programming 3-state output buffers 400-mV DC assured noise immunity with standard TTL loads
● Latchup immunity of 250 mA on all input and output pins
● Low power dissipation (CMOS Input Levels) -Active - 165mW Worst Case -Standby - 1.7mW Worst Case (CMOS-input levels) * FUTURE High Speed Offerings: 55ns, 70ns, 90ns 32-Pin LCC (ECA) (450 x 550 mils) A7 A12 A12 A14 6 A10 V PP NC NC VCC V CC A15 A14 CE2 A13 4 3 2 1 32 31 30 OPTIONS
● Timing 120ns access 150ns access 170ns access 200ns access 250ns access 300ns access 55ns access 70ns access 90ns access MARKING -12 -15 -17 -20 -25 -30 -55 -70 -90 A6 5 A7 A5 6 A6 A4 7 A5 A3 8 A4 A2 9 A3 A2 A1 10 A1 A0 11 A0 NC 12 DQ1 DQ0 13 29 A8 WE \ 28 A9 A13 27 A11 A8 26 NC A9 25 G\ A11 24 A10 OE \ 23 E\ A10 22 DQ7 CE1\ 21 DQ6 DQ8...
