Anterwell Technology Ltd.
Anterwell Technology Ltd. Large Original stock of IC Electronics Components, Transistors, Diodes etc. High Quality, Reasonable Price, Fast Delivery.
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32K × 8 CMOS STATIC RAM
GENERAL DESCRIPTION
The W24258/LL is a normal speed, very low power CMOS static RAM organized as 32768 × 8 bits that operates on a single 5-volt power supply. This device is manufactured using Winbond's high performance CMOS technology.
FEATURES
· Low power consumption:
- Active: 350 mW (max.)
- Standby: 25 mW (max.)
· Access time: 55/70 nS (max.)
· Single 5V power supply
· Fully static operation
· All inputs and outputs directly TTL compatible
· Three-state outputs
· Battery back-up operation capability
· Data retention voltage: 2V (min.)
· Packaged in 28-pin 600 mil DIP, 330 mil SOP and standard type one TSOP (8 mm * 13.4 mm)
Absolute Maximum Ratings
| PARAMETER | RATING | UNIT |
| Supply Voltage to VSS Potential | -0.5 to +7.0 | V |
| Input/Output to VSS Potential | -0.5 to VDD +0.5 | V |
| Allowable Power Dissipation | 1.0 | W |
| Storage Temperature | -65 to +150 | °C |
| Operating Temperature | 0 to 70 | °C |
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.
AC Test Conditions
| PARAMETER | CONDITIONS |
| Input Pulse Levels | 0V to 3.0V |
| Input Rise and Fall Times | 5 nS |
| Input and Output Timing Reference Level | 1.5V |
| Output Load | See the drawing below |
AC TEST LOADS AND WAVEFORM
BLOCK DIAGRAM