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TC4404CPA 데이터시트(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC4404CPA 데이터시트(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 6 page 4-219 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 TC4404 TC4405 INPUT GND EFFECTIVE INPUT C 12 pF 300 mV VDD PULL UP PULL DOWN 2 (3) A (B) 8 (6) 7 (5) 4 1 TC4404 INVERTING TC4405 NONINVERTING 4.7V FEATURES s Independently-Programmable Rise and Fall Times s Low Output Impedance ................................ 7 Ω Typ s High Speed tR, tF ....... <30 nsec with 1000 pF Load s Short Delay Times .................................... < 30 nsec s Wide Operating Range .......................... 4.5V to 18V s Latch-Up Protected ......... Will Withstand >500 mA Reverse Current (Either Polarity) s Input Withstands Negative Swings Up to –5V APPLICATIONS s Motor Controls s Driving Bipolar Transistors s Driver for Nonoverlapping Totem Poles s Reach-Up/Reach-Down Driver 1.5A DUAL OPEN-DRAIN MOSFET DRIVERS GENERAL DESCRIPTION The TC4404 and TC4405 are CMOS buffer-drivers constructed with complementary MOS outputs, where the drains of the totem-pole output have been left separated so that individual connections can be made to the pull-up and pull-down sections of the output. This allows the insertion of drain-current-limiting resistors in the pull-up and/or pull- down sections, allowing the user to define the rates of rise and fall for a capacitive load; or a reduced output swing, if driving a resistive load, or to limit base current, when driving a bipolar transistor. Minimum rise and fall times, with no resistors, will be less than 30 nsec for a 1000-pF load. There is no upper limit. For driving MOSFETs in motor-control applications, where slow-ON/fast-OFF operation is desired, these de- vices are superior to the previously-used technique of add- ing a diode-resistor combination between the driver output and the MOSFET, because they allow accurate control of turn-ON, while maintaining fast turn-OFF and maximum noise immunity for an OFF device. When used to drive bipolar transistors, these drivers maintain the high speeds common to other TelCom driv- ers. They allow insertion of a base current-limiting resistor, while providing a separate half-output for fast turn-OFF. By proper positioning of the resistor, either npn or pnp transis- tors can be driven. For driving many loads in low-power regimes, these drivers, because they eliminate shoot-through currents in the output stage, require significantly less power at higher frequencies, and can be helpful in meeting low-power budgets. Because neither drain in an output is dependent on the other, these devices can also be used as open-drain buffer/drivers where both drains are available in one device, ORDERING INFORMATION Part No. Package Temperature Range TC4404COA 8-Pin SOIC 0 °C to +70°C TC4404CPA 8-Pin PDIP 0 °C to +70°C TC4404EOA 8-Pin SOIC – 40 °C to +85°C TC4404EPA 8-Pin PDIP – 40 °C to +85°C TC4404MJA 8-Pin CerDIP – 55 °C to +125°C TC4405COA 8-Pin SOIC 0 °C to +70°C TC4405CPA 8-Pin PDIP 0 °C to +70°C TC4405EOA 8-Pin SOIC – 40 °C to +85°C TC4405EPA 8-Pin PDIP – 40 °C to +85°C TC4405MJA 8-Pin CerDIP – 55 °C to +125°C FUNCTIONAL BLOCK DIAGRAM TC4404/5-6 10/21/96 |
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