ALC109

Apex MediTech ALC109 ALARM SYSTEM P RIORITY ENCODED ALARM SYSTEM FOR MEDICAL DEVICES Rev. 04 — 28 November 2013 Product data sheet 1. General description The ALC109 is a hybrid priority encoded audio alarm, available in low cost packages, based on a high performance architecture that executes instructions quickly. Many functions have been incorporated into the ALC109 in order to reduce component count, board space, and system cost. The audio quality is maintained by ensuring at least four harmonics. 2. Features Two BCD inputs to select the priority Strobe to trigger the alarm Three priority encoded alarms, HIGH, MEDIUM, LOW and also a general purpose alarm. Inbuilt high performance audio power amplifier Drives 8Ω speaker directly. No other external components required Operates on single 5V supply Low standby current Simple modified polarized 28-pin DIP footprint 3. Ordering information Type number Package Description Version Packing information 25 pcs. ALC109 28-pin DIPMP Hybrid carrier, 18 leads 1.9 1 Product data sheet ALC109 www.apex-meditech.com Apex MediTech 4. Block diagram 5. Pinning information 2 Product data sheet ALC109 www.apex-meditech.com Apex MediTech 6. Pin description Symbol VDD Pin 1 2-4 10-12 VSS 13 14 STROBE 15 Type Supply NC * NC * Supply NC * I Description VDD No connection No connection VSS No connection Strobe to trigger the alarm set by the A, B and C inputs No connection Input B Input A 16 B A 17 18 NC * I I I = Input, O = Output, NC...