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TC4428MJA Fiches technique(PDF) 9 Page - Microchip Technology |
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TC4428MJA Fiches technique(HTML) 9 Page - Microchip Technology |
9 / 18 page © 2005 Microchip Technology Inc. DS21938A-page 9 TC4426M/TC4427M/TC4428M 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 3.1 Inputs A & B (IN A and IN B) MOSFET drivers IN A & B are high-impedance, TTL/ CMOS-compatible inputs. These inputs also have 300 mV of hysteresis between the high and low thresholds that prevents output glitching even when the rise and fall time of the input signal is very slow. 3.2 Ground (GND) GND is the device return pin. The ground pin(s) should have a low-impedance connection to the bias supply source return. High peak currents will flow out of the ground pin(s) when the capacitive load is being discharged. 3.3 Output A & B (OUT A and OUT B) MOSFET drivers OUT A & B are low-impedance, CMOS push-pull style outputs. The pull-down and pull- up devices are of equal strength, making the rise and fall times equivalent. 3.4 Supply Input (VDD) The VDD input is the bias supply for the MOSFET driver and is rated for 4.5V to 18V with respect to the ground pin. The VDD input should be bypassed with local ceramic capacitors. The value of these capacitors should be chosen based on the capacitive load that is being driven. A value of 1.0 µF is suggested. 8-Pin CERDIP Symbol Description 1 NC No connection 2 IN A Input A 3 GND Ground 4 IN B Input B 5 OUT B Output B 6VDD Supply input 7 OUT A Output A 8 NC No connection |
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