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The L6570A and L6570B are integrated circuits that generate write signals and amplify/read signals for double‑sided floppy disk drives. They support 8", 5.25" and 3.5" drives and feature TTL‑compatible inputs and outputs with programmable timing.
Key specifications include supply voltage ranges of 5 V to 14 V, write current ranges of 2 mA to 10 mA, and various performance parameters such as power‑supply rejection, channel isolation, and thermal limits. The device operates from –65 °C to +150 °C (storage) and 0 °C to +70 °C (ambient).
| 5 V Supply Voltage (max) | 7 V |
|---|---|
| 12 V Supply Voltage (max) | 14 V |
| 5 V Supply Current (Read Mode) | 35 mA |
| Write Current Range | 2 mA to 10 mA |
| Current Boost Voltage | 0.5 V |
| Channel Isolation (Unselected) | 40 dB |
| Power Dissipation (max) | 500 mW |
The device can operate with a 5 V supply up to 7 V and a 12 V supply up to 14 V.
The write current can be set between 2 mA and 10 mA.
The maximum power dissipation is 500 mW.