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TC4428AM Datasheet(PDF) 7 Page - Microchip Technology |
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TC4428AM Datasheet(HTML) 7 Page - Microchip Technology |
7 / 16 page © 2005 Microchip Technology Inc. DS21939A-page 7 TC4426AM/TC4427AM/TC4428AM 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 driver IN A & B are high-impedance, TTL/CMOS-compatible inputs. These inputs also have 300 mV of hysteresis between the high and low thresholds, which prevents output glitching even when the rise and fall time of the input signal is very slow. 3.2 Ground (GND) The GND pin is the return path for both the bias current and the high peak current that discharges the external load capacitance. The ground pin should be tied into a ground plane or have a very short trace to the bias sup- ply source return. 3.3 Outputs A & B (OUT A and OUT B) MOSFET driver 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. 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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