| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| MC74HC257D | Quad 2-input data selector/multiplexer wirh 3-state outputs | Motorola | SOIC | 16 | -55°C | 125°C | 175 K |
| MC74HC257N | Quad 2-input data selector/multiplexer wirh 3-state outputs | Motorola | PDIP | 16 | -55°C | 125°C | 175 K |
| MC74LCX257D | Low-voltage CMOS quad 2-input multiplexer | Motorola | - | 16 | -40°C | 85°C | 155 K |
| MC74LCX257DT | Low-voltage CMOS quad 2-input multiplexer | Motorola | plastic TSSOP | 16 | -40°C | 85°C | 155 K |
| MC74LCX257M | Low-voltage CMOS quad 2-input multiplexer | Motorola | - | 16 | -40°C | 85°C | 155 K |
| MC74LCX257SD | Low-voltage CMOS quad 2-input multiplexer | Motorola | - | 16 | -40°C | 85°C | 155 K |
| MCM32257BZ20 | 512M x 32 bit fast static RAM module | Motorola | ZIP | 64 | 0°C | 70°C | 158 K |
| MCM32257BZ25 | 512M x 32 bit fast static RAM module | Motorola | ZIP | 64 | 0°C | 70°C | 158 K |
| MMBZ5257BLT1 | Zener voltage regulator diode | Motorola | - | 3 | - | - | 258 K |
| MMSZ5257BT1 | Plastic surface mount zener diode 500 milliwatts | Motorola | - | 2 | -55°C | 150°C | 258 K |
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