EL2252C

EL2252C EL2252C Dual 50 MHz Comparator Pin Receiver Features  Fast response 7 ns  Inputs tolerate large overdrives with no speed nor bias current penalties  Propagation delay is relatively constant with variations of input Slew Rate overdrive temperature and supply voltage  Output provides proper CMOS or TTL logic levels  Hysteresis is available on-chip  Large voltage gain 8000 V V  Not oscillation-prone  Can detect 4 ns glitches  MIL-STD-883 Rev C compliant General Description The EL2252 dual comparator replaces the traditional input buffer a attenuator a ECL comparator a ECL to TTL translator circuit blocks used in digital equipment The EL2252 provides a quick 7 ns propagation delay while complying with g 10V inputs Input accuracy and propagation delay is maintained even with input signal Slew Rates as great as 4000 V ms The EL2252 can run on supplies as low as b 5 2V and a 9V and comply with ECL and CMOS inputs or use supplies as great as g 18V for much greater input range The EL2252 has a TTL pin which when grounded restricts the output VOH to a TTL swing to minimize propagation delay When left open the output VOH increases to a valid CMOS level The comparators are well behaved and have little tendency to oscillate over a variety of input and output source and load impedances They do not oscillate even when the inputs are held in the linear range of the device To improve output stability in the presence of input noise an internal 60 mV of hysteresis is availabl...