| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| DM74ALS20AN | Dual 4-Input NAND Gates | Fairchild-Semiconductor | MDIP | 14 | - | - | 46 K |
| MC74HC4020AN | 14-Stage Binary Ripple Counter | ON-Semiconductor | PDIP | 16 | - | - | 167 K |
| N74ALS20AN | Dual 4-Input NAND gate | Philips-Semiconductors | SOT27 | - | - | - | 85 K |
| SN74ALS20AN | DUAL 4-INPUT POSITIVE-NAND GATES | Texas-Instruments | N | 14 | 0°C | 70°C | 95 K |
| SN74ALS620AN | OCTAL BUS TRANSCEIVERS | Texas-Instruments | N | 20 | 0°C | 70°C | 156 K |
| TP3420AN308 | ISDN S/T Interface Device | distributor | MDIP | 20 | - | - | 524 K |
| W91320AN | Tone/pulse dialer with handfree lock and hold functions | Winbond-Electronics | - | 20 | -20°C | 70°C | 217 K |
| W91520AN | Tone/pulse dialer with handfree and hold functions | Winbond-Electronics | - | 20 | -20°C | 70°C | 193 K |
| W91820AN | 13-memory tone/pulse dialer with handfree, lock and hold functions | Winbond-Electronics | - | 22 | -20°C | 70°C | 260 K |
| W91F820AN | 13-flash memory tone/pulse dialer with hzndfree, lock and hold functions | Winbond-Electronics | - | 22 | -20°C | 70°C | 231 K |
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