unisonic technologies co., ltd 1618 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2008 unisonic technologies co., ltd qw-r502-007.e 6 keys siren/alarm sound generator ? description the utc 1618 is a cmos design for 6 different alarm sounds application. according to the priori ty of the select keys, the sound of utc 1618 will be generated in cycling sequence. ? features * auto power off function, reduce power consumption. * low operating voltage: 2v ~ 5v. * on-chip rc oscillator. * 6 different sounds. * 6 prioritized keys for selecting 6 different sounds. * low stand by current. * cmos process. lead-free: 1618l halogen-free: 1618g ? ordering information ordering number normal lead free halogen free package packing 1618-D16-T 1618l-d16- t 1618g-d16-t dip-16 tube
1618 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-007.e ? pin configuration 1 2 3 4 5 6 7 8 gnd s1 s2 s6 s4 s5 s3 v dd utc 1618 16 15 14 13 12 11 10 9 ini nc bz1 bz2 osc1 osc2 nc nc ? pin descriptions pin # pin name i/o description 1 v dd - power supply pin (+). 2 s3 i 3 s5 i 4 s4 i 5 s6 i 6 s2 i 7 s1 i sound selection keys. these keys connect with internal pull-down resistors. the sound output will be enabled when a key is connected to v dd . on other hands, the sound output will be disabled if a key is n.c. or connected to gnd. when two or more keys are selected in the same time, the sound will be generated in cycling sequence. accord ing to the priority of the keys, the proirity of s1~s6 list below : s1>s2>s6>s4>s5>s3. 8 gnd - power supply pin (-). 9 ini i an internal pull-up resistor. might disable bz1, bz2, when connected to gnd. 10 nc - no connecting. 11 bz1 o 12 bz2 o audio output pins. 13 osc1 o 14 osc2 i oscillator pin with external resistor. 15 nc - no connecting. 16 nc o no connecting.
1618 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-007.e ? absolute maximum rating parameter symbol ratings unit supply voltage v dd -0.3 ~ 6 v input voltage v in -0.3 ~ v dd +0.3 v output voltage v out -0.3 ~ v dd +0.3 v operating temperature t opr 0 ~ 65 c storage temperature t stg -40 ~ 125 c note: absolute maximum ratings are those values beyo nd which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (v dd =3v,t a =25c, unless otherwise specified) parameter symbol min typ max unit operating voltage v dd 2 3 5 v i oh 1 ma bz1, bz2 driving current i ol 1 ma stand-by current i sb 10 20 ua operating current i op 300 500 ua operating frequency f op 70 80 128 khz
1618 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-007.e ? application circuit () ()
1618 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-007.e utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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