MAX9685

19-2398; Rev 1; 7/93 Ultra-Fast ECL-Output Comparator with Latch Enable _______________General Description The MAX9685 is an ultra-fast ECL comparator manufactured with a high-frequency bipolar process (fT = 6GHz) capable of very short propagation delays. This design maintains the excellent DC matching characteristics normally found only in slower comparators. The device is pin-compatible with the AD9685 and Am6685, but exceeds their AC characteristics. The MAX9685 has differential inputs and complementary outputs that are fully compatible with ECL-logic levels. Output current levels are capable of driving 50Ω terminated transmission lines. The ultra-fast operation makes signal processing possible at frequencies in excess of 600MHz. A latch-enable (LE) function is provided to allow the comparator to be used in a sample-hold mode. When LE is ECL high, the comparator functions normally. When LE is driven ECL low, the outputs are forced to an unambiguous ECL-logic state, dependent on the input conditions at the time of the latch input transition. If the latch-enable function is not used, the LE pin must be connected to ground. ____________________________Features o 1.3ns Propagation Delay o 0.5ns Latch Setup Time o +5V, -5.2V Power Supplies o Pin-Compatible with AD9685, Am6685 o Available in Commercial, Extended-Industrial, and Military Temperature Ranges o Available in Narrow SO Package MAX9685 ______________Ordering Information PART MAX9685CPE MAX9685CSE MAX9685CJE MAX9685...