PART NO.	PRICE		STOCK	MANUFACTURE	DESCRIPTION	Mounting Style	Package / Case	Maximum Operating Temperature	Packaging	Supply Voltage - Max	Supply Voltage - Min	Battery Backup Switching	RTC Bus Interface	Date Format	Time Format	RTC Memory Size
DS1744W-120+	1+ $33.650 10+ $31.970 25+ $29.510 50+ $28.030	PDF RFQ	95 In-stock	Maxim Integrated	Real Time Clock Timekeeping NV RAM	Through Hole	EDIP-28	+ 70 C	Tube	3.63 V	2.97 V		Parallel	YYYY-MM-DD	HH:MM:SS	32768 B
DS1746W-120+	1+ $40.960 10+ $38.920 25+ $35.920 50+ $34.130	PDF RFQ	139 In-stock	Maxim Integrated	Real Time Clock Timekeeping NV RAM	Through Hole	EDIP-32	+ 70 C	Tube	3.63 V	2.97 V		Parallel	YYYY-MM-DD	HH:MM:SS	131072 B
DS1747WP-120+	1+ $47.480 10+ $45.110 25+ $41.640 50+ $39.560	PDF RFQ	72 In-stock	Maxim Integrated	Real Time Clock Timekeeping NV RAM	Through Hole	PowerCap Module-34	+ 70 C	Tube	3.63 V	2.97 V		Parallel	YYYY-MM-DD	HH:MM:SS	524288 B
DS1744WP-120+	1+ $31.930 10+ $30.340 25+ $28.010 50+ $26.620	PDF RFQ	75 In-stock	Maxim Integrated	Real Time Clock Timekeeping NV RAM	Through Hole	PowerCap Module-34	+ 70 C	Tube	3.63 V	2.97 V		Parallel	YYYY-MM-DD	HH:MM:SS	32768 B
DS1747W-120+	1+ $49.970 10+ $47.480 25+ $43.810 50+ $41.620	PDF RFQ	38 In-stock	Maxim Integrated	Real Time Clock Timekeeping NV RAM	Through Hole	EDIP-32	+ 70 C	Tube	3.63 V	2.97 V		Parallel	DW:DM:M:Y	HH:MM:SS	512 KB
DS1556W-120+	1+ $43.120 10+ $41.040 25+ $38.000 50+ $36.180	PDF RFQ	42 In-stock	Maxim Integrated	Real Time Clock 1M NV RAM Timekeeper	Through Hole	EDIP	+ 70 C	Tube	3.63 V	2.97 V		Parallel		HH:MM:SS	131072 B
DS1554W-120+	1+ $29.080 10+ $27.670 25+ $25.630 50+ $24.400	PDF RFQ	24 In-stock	Maxim Integrated	Real Time Clock 256kB NV RAM Timekeeper	Through Hole	EDIP-32	+ 70 C	Tube	3.63 V	2.97 V		Parallel		HH:MM:SS	32768 B
DS1251W-120+	1+ $46.140 10+ $43.910 25+ $40.640 50+ $38.670	PDF RFQ	9 In-stock	Maxim Integrated	Real Time Clock 4096K NV SRAM w/Phantom Clock	Through Hole	EDIP-32	+ 70 C	Tube	3.63 V	2.97 V	Backup Switching	Phantom Clock	YY-MM-DD-dd	HH:MM:SS:hh	4096 KB
DS1553W-120+	1+ $29.530 10+ $28.060 25+ $25.900 50+ $24.610	PDF RFQ	6 In-stock	Maxim Integrated	Real Time Clock 64kB NV RAM Timekeeper	Through Hole	DIP-28	+ 70 C	Tube	3.63 V	2.97 V		Parallel	DW:DM:M:Y	HH:MM:SS	8 kB
DS1248W-120+	1+ $45.760 10+ $43.540 25+ $40.320 50+ $38.370	PDF RFQ	22 In-stock	Maxim Integrated	Real Time Clock 1024k NV SRAM w/Phantom Clock	Through Hole	EDIP-32	+ 70 C	Tube	3.63 V	2.97 V	Backup Switching	Parallel	DW:DM:M:Y	HH:MM:SS:hh	128 kB