Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
Sourcing Texas Instruments Real Time Clocks: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.
Product List
Total Components: 83
| Product | Pricing | Datasheet | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply, Battery | Current - Timekeeping (Max) | Type | Mounting Type | Operating Temperature | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 BQ4802LYPW Texas Instruments | 1 $4.6700 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 2.7V ~ 3.6V | 28-TSSOP (0.173", 4.40mm Width) | 28-TSSOP | 9,959 | |
 BQ4802LYDW Texas Instruments | 1 $4.8900 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 2.7V ~ 3.6V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 7,307 | |
BQ4845S-A4TR Texas Instruments | 1 $9.2400 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.75V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 1,128 | |
 BQ3285S-SB2 Texas Instruments | 1 $13.5700 | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 4V | - | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC | 4,227 | |
 BQ3285LCS Texas Instruments | 1 $2.3100 | - | - | - | - | - | - | - | - | - | - | - | - | - | 3,436 | |
BQ3285ESS-N Texas Instruments | 1 $2.4300 | - | - | - | - | - | - | - | - | - | - | - | - | - | 7,852 | |
 BQ3285P-SB2E3 Texas Instruments | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 4V | - | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.5V ~ 5.5V | 24-DIP (0.600", 15.24mm) | 24-PDIP | 9,958 | ||
BQ3285S-SB2TRG4 Texas Instruments | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 4V | - | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC | 5,743 | ||
BQ4285S-SB2G4 Texas Instruments | Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output | 114B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.5V ~ 4V | - | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC | 6,841 | ||
BQ4845S-A4G4 Texas Instruments | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.75V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 6,977 | ||
BQ4845S-A4NG4 Texas Instruments | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 4.75V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 4,363 | ||
 BQ4845YP-A4E3 Texas Instruments | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.5V ~ 5.5V | 28-DIP (0.600", 15.24mm) | 28-PDIP | 8,884 | ||
BQ4845YS-A4G4 Texas Instruments | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.3V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 3,331 | ||
BQ4850YMA-85N Texas Instruments | 1 $71.5700 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 1mA @ 4.5V ~ 5.5V | Clock/Calendar | Through Hole | -40°C ~ 85°C | 4.5V ~ 5.5V | 32-DIP Module (0.61", 15.49mm) | 32-DIP Module (18.42x52.96) | 7,002 | |
BQ4802LYPWR Texas Instruments | 1 $6.6200 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 2.7V ~ 3.6V | 28-TSSOP (0.173", 4.40mm Width) | 28-TSSOP | 6,934 | |
BQ4802LYDWR Texas Instruments | 1 $6.9500 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.4V ~ 4V | 1.5mA (Typ) @ 2.7 V ~ 3.6 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 2.7V ~ 3.6V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 2,084 | |
BQ4802YDWR Texas Instruments | 1 $17.5300 | Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Parallel | 2.4V ~ 4V | 1.5mA (Typ) @ 4.5 V ~ 5.5 V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 2,123 | |
 BQ32000DR Texas Instruments | 1 $69.2250 100 $55.3800 500 $46.1500 | Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.4V ~ 3.6V | 100µA @ 3.3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 3V ~ 3.6V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 1,000 | |
BQ32002D Texas Instruments | 1 $1.0000 | Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.4V ~ 3.6V | 200µA @ 3.3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 3V ~ 3.6V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 7,846 | |
BQ32002DR Texas Instruments | 1 $1.3900 | Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.4V ~ 3.6V | 65µA @ 3.3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 3V ~ 3.6V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 2,190 |