el2021 Intersil Corporation, el2021 Datasheet
el2021
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el2021 Summary of contents
Page 1
... With the small size and power consumption of the monolithic EL2021, a driver per node with little or no multiplexing becomes practical. Since only a few pins of “bed-of-nails” board testers need be active at any given time, the power-down feature saves substantial power in large systems ...
Page 2
... I - B+, B- Input Currents Output Voltage O I Threshold SENSE+ +ISENSE I Threshold SENSE- -ISENSE V Sense Out Levels O, SENSE I High-Impedance OUT,TRI Output Leakage 2 EL2021 V , Drive+, OUT Drive 25° 15 -10V +3.6V 3.1V. OE and E low. CE ...
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... CL CH System power supply. The EL2021 uses this pin as a negative output current monitor connection. Little current is drawn from this pin, transient or static. Negative output current monitor input. Negative power supply. Because all negative output drive currents come from this pin (as much as 60mA transiently), good bypassing is essential ...
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... C1 = 200pF, VSR = 1V, and overcompensated with 22pF from each drive pin to ground. Family of + output edges for VSR = 0.5V, 1V, 2V, 3V, 5V. 4 EL2021 Family of output waveshapes. ECL, TTL, CMOS, HCMOS with C1 = 200pF, VSR = 1V. erting Gains Family of output waveshapes from active high-impedance H, L. ...
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... Output Stage To meet the requirements of low output impedance, wide bandwidth, and large capacitive load driving capability, the EL2021 has a fairly exotic output stage. Figure 1 shows a simplified schematic of the circuit, only applicable in normal, low impedance mode. External transistors are used to handle the large load currents and peak power dissipations. ...
Page 6
... V currents important to characterize the external devices for the service that the EL2021 will be expected to provide. The output stage of the EL2021 does not ring appreciably into a capacitive load in quiescent conditions, but it does ring while it slews. This is an unusual characteristic, but the output slews monotonically and the slew “ ...
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... B+ or B-, very large internal fault CH CL currents can flow when the EL2021 attempts to bring an output transistor's base beyond the collector voltage. The bypassing care of the V± lines apply to the B± lines, as well as the fact that ampere currents can occur. Large (100µF– ...
Page 8
... Using the EL2021 without External Transistors By connecting both drive pins to the output pin, the EL2021 can be used as a stand-alone driver, not requiring the external transistors. The EL2021 is good for more than Typical Applications All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’ ...