Overview








Real-Time Clocks



DATA SHEETS
Part Number Description Key Advantages
DS1374, DS1374C, DS1374U I²C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

Elapsed Time Counter Provides Power-On Reset, Watchdog or Alarm, and Square Wave
DS1338, DS1338C, DS1338U,
...
I²C RTC with 56-Byte NV RAM

DS1339, DS1339C, DS1339U I²C Serial Real-Time Clock

RTC Provides System Flexibility with Multiple Programmable Features
MAX9471, MAX9472 Multiple Output Clock Generators with Dual PLLs and OTP

Bidirectional Composite Video Signal, Single-Supply Operation, Two Composite Inputs and Outputs
DS1337, DS1337C I²C Serial Real-Time Clock

Industry's Smallest I²C RTC with Two Time-of-Day Alarms
DS1682 Total-Elapsed-Time Recorder with Alarm

Industry's First Crystal-less Elapsed Time Counter
DS1678 Real-Time Event Recorder

DS1672 I²C 32-Bit Binary Counter RTC

Low-Voltage, Serial Timekeeping Chip Combines an Ultra-Low-Voltage Clock with Sophisticated Power-Monitoring Circuitry, Power-Fail Switches, and a Switch to Optional Trickle-Charging, Replacing Several Discrete Components with One Chip



Key Specifications:

Clock Generators
Part Number Applications fIN
(MHz)
fIN
(MHz)
fOUT
(MHz)
fOUT
(MHz)
Fixed or Continuous Frequency Output Levels Out-
puts
PLLs Program-
mability
Spread Spectrum Output Jitter
(ps)
VSUPPLY
(V)
Package/Pins
min max min max RMS
MAX9471  General Purpose 5 50 4 200 Continuous LVCMOS 4 2 Factory One-Time Programmable (OTP) No 14 3.3
TQFN/20
MAX9472  3
See Data Sheet
See All Clock Generators (10)

Timekeeping & Real-Time Clocks
Part Number Functions Date/ Time Format Interface VSUPPLY
(V)
Time Keeping Current
(nA)
CL
(pF)
Memory Type Memory Size
(Bytes)
Time of Day Alarms Integrated Resonator
hh = sec/100 typ
DS1374 
Elapsed Time Counter
Watchdog Timekeeper
Binary I2C
1.8
3
3.3
5
400 6 None - 1 -
DS1338  - YY-MM-DD/ HH:MM:SS
1.8
3
3.3
5
800 12.5 NV SRAM 56 0 -
DS1339  - YY-MM-DD/ HH:MM:SS
2
3
3.3
5
400 6 None - 2 -
DS1337  - YY-MM-DD/ HH:MM:SS
2
3
3.3
5
425 6 None - 2 -
DS1337C  - YY-MM-DD/ HH:MM:SS
2
3
3.3
5
425 6 None - 2 XTAL
DS1672  Elapsed Time Counter Binary
2
3
3.3
425 6 None - 0 -
DS1682  Time/Temperature/Event Recorder Binary
3
3.3
5
- - EEPROM 10 1 -
DS1678  - YY-MM-DD/ HH:MM:SS 5 300 12.5 NV SRAM 32 1 -
See All Timekeeping & Real-Time Clocks (87)





Contact Us     |     Privacy Policy     |     Legal Notices     |     Distributor Portal
Copyright © 2012 by Maxim Integrated Products