L239B

L293B L293E PUSH-PULL FOUR CHANNEL DRIVERS . . . . . . OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT FACILITY HIGH NOISE IMMUNITY SEPARATE LOGIC SUPPLY OVERTEMPERATURE PROTECTION DIP16 ORDERING NUMBER : L293B DESCRIPTION The L293B and L293E are quad push-pull drivers capableof delivering output currents 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. Additionally, the L293E has external connection of sensing resistors, for switchmode control. The L293Band L293E are package in 16 and 20-pin plastic DIPs respectively ; both use the four center pins to conduct heat to the printed circuit board. PIN CONNECTIONS DIP16 - L293B POWERDIP (16 + 2+ 2) ORDERING NUMBER : L293E POWERDIP (16+2+2) - L293E April 1993 1/12 L293B - L293E BLOCK DIAGRAMS DIP16 - L293B POWERDIP (16+2+2) - L293E 2/12 L293B - L293E SCHEMATIC DIAGRAM (*) In the L293 these points are not externally available. They are internally connected to the ground (substrate). O Pins of L293 () Pins of L293E. 3/12 L293B - L293E ABSOLUTE MAXIMUM RATINGS Symbol Vs Vss Vi Vinh Iout Ptot Tstg, Tj Parameter Supply Voltage Logic Supply Voltage Input Voltage Inhibit Voltage Peak Output Current (non repetitive t = 5ms) o Total...