Mounting Type is Surface Mount - Clock/Timing - Real Time Clocks Distributor - AM1805AQ DS1248WP-120 DS1251WP-120

Part Number	Manufacturer / Brand	Brife Description	Part Status	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
AM1805AQ	Ambiq Micro, Inc.	REAL-TIME CLOCK WITH POWER MANAG	Active	-	-	-	-	-	-	-	-	-	-	Surface Mount	16-VFQFN Exposed Pad	16-QFN (3x3)
DS1248WP-120	Maxim Integrated	IC RTC PHANTOM PAR 34-PCM	Obsolete	Phantom Time Chip	NVSRAM	128KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	7mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1251WP-120	Maxim Integrated	IC RTC PHANTOM PAR 34-PCM	Obsolete	Phantom Time Chip	Leap Year, NVSRAM	512KB	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	7mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1284Q	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 28-PLCC	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	50B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.4 V ~ 3.5 V	7mA @ 5V	0°C ~ 70°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
DS12885Q	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 28-PLCC	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 4 V	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	28-LCC (J-Lead)	28-PLCC (11.51x11.51)
DS12885S	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 4 V	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
DS1302Z	Maxim Integrated	IC RTC CLOCK/CALENDAR SER 8-SOIC	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Trickle-Charger	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2 V ~ 5.5 V	2 V ~ 5.5 V	0.3µA ~ 1µA @ 2V ~ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1305EN+	Maxim Integrated	IC RTC CLOCK/CALENDAR SPI 20-TSSOP	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Trickle-Charger	96B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	2 V ~ 5.5 V	2 V ~ 5.5 V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
DS1307Z	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5 V ~ 5.5 V	2 V ~ 3.5 V	200µA @ 5V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1307ZN	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5 V ~ 5.5 V	2 V ~ 3.5 V	200µA @ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1315S-5+	Maxim Integrated	IC RTC PHANTOM PAR 16-SOIC	Active	Phantom Time Chip	Leap Year	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	1.3mA @ 5V	0°C ~ 70°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
DS1337C#T&R	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 16-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	16-SOIC (0.295", 7.50mm Width)	16-SOIC
DS1337S+T&R	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1337U	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Obsolete	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1337U+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.6µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1338U-33	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3 V ~ 5.5 V	1.3 V ~ 3.7 V	125µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1338U-33+T&R	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-USOP	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3 V ~ 5.5 V	1.3 V ~ 3.7 V	125µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-uMAX
DS1338Z-18+	Maxim Integrated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.71 V ~ 5.5 V	1.3 V ~ 3.7 V	100µA @ 1.89V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS14285S	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Obsolete	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.6 V	0.5µA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
DS1501WS	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 28-SOIC	Obsolete	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output, Watchdog Timer, Y2K	256B	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	3 V ~ 3.6 V	2.5 V ~ 3.7 V	4mA @ 3V ~ 3.6V	0°C ~ 70°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
DS1554P-70	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Discontinued at -	Clock/Calendar	Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	6mA @ 5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1643AL-120	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-LPM	Obsolete	Clock/Calendar	Leap Year, NVSRAM	8KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	-	4mA @ 5V	0°C ~ 70°C	Surface Mount	34-LPM	34-LPM
DS1644P-120	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Obsolete	Clock/Calendar	Leap Year, NVSRAM	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	4mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1646P-120	Maxim Integrated	IC RAM TIMEKEEP NV 120NS 34-PCM	Active	Clock/Calendar	Leap Year, NVSRAM	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	4mA @ 4.5 V ~ 5.5 V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1670S	Maxim Integrated	IC RTC SYSTEM Controller SER 20-SOIC	Obsolete	Portable System Controller	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2.97 V ~ 3.63 V	2.5 V ~ 3.7 V	100µA @ 3.3V	0°C ~ 70°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
DS1673S-3	Maxim Integrated	IC RTC SYSTEM Controller SER 20-SOIC	Obsolete	Portable System Controller	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	2.7 V ~ 3.3 V	2.5 V ~ 3.7 V	100µA @ 3V	0°C ~ 70°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
DS1678S	Maxim Integrated	IC RTC EVENT REC I2C 8-SOIC	Obsolete	Time Event Recorder	Alarm, Leap Year, NVSRAM, Y2K	32B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5 V ~ 5.5 V	2.6 V ~ 3.5 V	-	-40°C ~ 85°C	Surface Mount	8-SOIC (0.209", 5.30mm Width)	8-SO
DS1682S+	Maxim Integrated	IC RTC ELAPSED CNT I2C 8-SOIC	Active	Elapsed Time Counter	Alarm, EEPROM	10B	Binary	Binary	I²C, 2-Wire Serial	2.5 V ~ 5.5 V	-	4µA ~ 15µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
DS1685E-5	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-TSSOP	Obsolete	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	3mA @ 5V	0°C ~ 70°C	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
DS1685S-5	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Obsolete	Clock/Calendar	Alarm, NVSRAM, Square Wave Output, Y2K	242B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	3mA @ 5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
DS1689S	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 28-SOIC	Obsolete	Clock/Calendar	NVSRAM	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7 V ~ 3.3 V, 4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	2mA @ 3V, 3mA @ 5V	0°C ~ 70°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
DS1689SN	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 28-SOIC	Obsolete	Clock/Calendar	NVSRAM	114B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	2.7 V ~ 3.3 V, 4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	2mA @ 3V, 3mA @ 5V	-40°C ~ 85°C	Surface Mount	28-SOIC (0.295", 7.50mm Width)	28-SOIC
DS17285S-5+	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
DS17285SN-5+	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	2KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	3mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
DS1743P-100	Maxim Integrated	IC RTC RAM Y2K 5V 100NS 34-PCM	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	8KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	3mA @ 5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1743WP-150	Maxim Integrated	IC RTC RAM Y2K 3.3V 150NS 34-PCM	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	8KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	2mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1744P-70	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Y2K	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	3V	4mA @ 5V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1744WP-120	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Y2K	32KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	2mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1746WP-120	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Y2K	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	2mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1746WP-120+	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Active	Clock/Calendar	Leap Year, NVSRAM, Y2K	128KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	2mA @ 3.3V	0°C ~ 70°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS1747WP-120IND	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 34-PCM	Obsolete	Clock/Calendar	Leap Year, NVSRAM, Y2K	512KB	HH:MM:SS (24 hr)	YY-MM-DD-dd	Parallel	2.97 V ~ 3.63 V	3V	2mA @ 3.3V	-40°C ~ 85°C	Surface Mount	34-PowerCap™ Module	34-PowerCap Module
DS17485S-5	Maxim Integrated	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Discontinued at -	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	4KB	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	2.5 V ~ 3.7 V	3mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Surface Mount	24-SOIC (0.295", 7.50mm Width)	24-SOIC
ISL12022MAIBZ-T	Renesas Electronics America Inc.	IC RTC CLOCK/CALENDAR I2C 20-SOIC	Active	Clock/Calendar	Alarm, Daylight Savings, Leap Year, SRAM	128B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	2.7 V ~ 5.5 V	1.8 V ~ 5.5 V	14µA ~ 15µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	20-SOIC (0.295", 7.50mm Width)	20-SOIC
PT7C4302WEX	Diodes Incorporated	IC RTC CLOCK/CALENDAR SER 8-SOIC	Active	Clock/Calendar	Leap Year, NVSRAM, Square Wave Output, Trickle-Charger	31B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	3-Wire Serial	1.2 V ~ 5.5 V	1.5 V ~ 5.5 V	25.3µA ~ 81µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PT7C4307WEX	Diodes Incorporated	IC RTC CLOCK/CALENDAR I2C 8-SOIC	Active	Clock/Calendar	Alarm, Leap Year, NVSRAM, Square Wave Output	56B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	4.5 V ~ 5.5 V	2 V ~ 3.5 V	1.5mA @ 4.5V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PT7C4337UEX	Diodes Incorporated	IC RTC CLOCK/CALENDAR I2C MSOP	Active	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8 V ~ 5.5 V	-	0.8µA @ 1.3V ~ 1.8V	-40°C ~ 85°C	Surface Mount	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
RTC-4543SA:A0	EPSON	IC RTC CLOCK/CALENDAR SER 14-SOIC	Obsolete	Clock/Calendar	Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	2.5 V ~ 5.5 V	-	1µA ~ 3µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	14-SOIC (0.209", 5.30mm Width)	14-SOP
RTC-63423B	EPSON	IC RTC CLOCK/CALENDAR PAR 24-SOIC	Obsolete	Clock/Calendar	Alarm	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	-	-	-40°C ~ 85°C	Surface Mount	24-SOIC (0.311", 7.90mm Width)	24-SOP
RTC-72423A	EPSON	IC RTC CLOCK/CALENDAR PAR 24-SOP	Obsolete	Clock/Calendar	Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5 V ~ 5.5 V	-	5µA ~ 10µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	24-SOIC (0.311", 7.90mm Width)	24-SOP
RX-4571NB:B3 PURE SN	EPSON	IC RTC CLOCK/CALENDAR SER 22-SON	Active	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	3-Wire Serial	1.6 V ~ 5.5 V	-	0.95µA ~ 1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	22-LFDFN	22-SON (5x6)

Manufacturers for Clock/Timing - Real Time Clocks