EL2252C中文资料Dual 50 MHz Comparator/Pin Receiver数据手册Renesas规格书

描述 Description

General Description
The EL2252 dual comparator replaces the traditional input buffer a attenuator aECL comparator aECL to TTL translator circuit blocks used in digital equipment. The EL2252 provides a quick 7 ns propagation delay while complying with g10V inputs. Input accuracy and propagation delay is main tained even with input signal Slew Rates as great as 4000 V/ms. The EL2252 can run on supplies as low as b5.2V and a9V and comply with ECL and CMOS inputs, or use supplies as great as g18V 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 available by connecting the HYS pin to Vb.
Elantec’s products and facilities comply with MIL-I-45208A, and other applicable quality specifications. For information on Elantec’s processing, see Elantec document, QRA-1; ‘‘Elantec’s Processing, Monolithic Integrated Circuits’’.

特性 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 compliantApplications
● Pin receiver for automatic test equipment
● Data communications line receiver
● Frequency counter input
● Pulse squarer

应用 Application

● Pin receiver for automatic test equipment
● Data communications line receiver
● Frequency counter input
● Pulse squarer