SY88973V

The SY88973V incorporates a loss-of-signal (LOS), open-collector TTL output with internal 4.75k pull-up resistor. A programmable, loss-of-signal level set pin (LOSLVL) sets the sensitivity of the input amplitude detection. LOS asserts high if the input amplitude falls below the threshold set by LOSLVL and de-asserts low otherwise. LOS can be fed back to the enable (/EN) input to maintain output stability under a loss-of-signal condition. /EN de-asserts the true output signal without removing the input signal. Typically 4.6dB LOS hysteresis is provided to prevent chattering.Please see Micrel's website at www.micrel.com for a complete selection of optical module ICs. The following table summarizes the differences between devices in Micrel's latest family of Limiting Amplifiers.All support documentation can be found on Micrel's web site at www.micrel.com.