The L293B is a quad push-pull driver capable of delivering outputcurrents to 1A per channel. Each channel is controlledby a TTL-compatible logic input and each pair of drivers (a full bridge) is equipped with an inhibit input which turns off all four transistors. A separate supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation. This is in a DIP16 package.
The product datasheet is available here to view
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