B61089QDR & B9110DF Dual-Port SLIC Protectors

Littelfuse B61089QDR Dual-Port Subscriber Line Interface Circuit (SLIC) protectors protect two different SLIC tip/ring pairs with independent voltage tracking for each pair. Littelfuse B61089QDR protects the SLIC interface against lightning-induced surge and power fault events. This SLIC protector contains fast switching crowbarring structures for negative events and a simple fast switching diode structure for positive events. B9110DF dual-port polarity programmable SLIC protector protects smart ringing SLICs with dual power supplies. B9110DF protects the SLIC interface against lightning-induced surges and power fault events. This SLIC protector contains fast switching crowbarring structures that are compatible with the Basic levels outlined in ITU K.20, K.21, K.45.