1. Absolute Maximum Ratings:

️· Supply Voltage (VCC): 4.5 to 5.5 Volts
️· Supply Voltage (VBB): 2.2 to 5.5 Volts
️· Operating Temperature: -55 to +125 degrees Celsius
️· Storage Temperature Range: -65 to +150 degrees Celsius
️· Input/Output Voltage: 0 to VCC volts
️· Lead Temperature (Soldering): 260 degrees Celsius
️· Power Dissipation (PD): 500 mW
️· Electro-Static Discharge Rating: 1 kV

2. DC Electrical Characteristics:

️· Input Voltages (VIH & VIL):
- For most inputs (except OSC IN): 2.0V to 0.8V
- For OSC IN (with external clock): 2.0V to 0.1V
️· Output Voltages (VOH & VOL):
- *VOH* (High-Level Output): VCC - 0.1V (when IOUT = -20mA) to VCC (when IOUT = -4.0mA)
- *VOL* (Low-Level Output): 0.1V (when IOUT = 20mA) to 0.25V (when IOUT = 4.0mA)
️· Input Current (IIN): g1.0 mA (when VIN = VCC or GND)
️· Output TRI-STATE Current (IOZ): g5.0 mA (when VOUT = VCC or GND)
️· Quiescent Supply Current (ICC): Varies greatly depending on conditions:
- FOSC = 32.768 kHz, VIN = VCC/GND: 275 mA
- FOSC = 32.768 kHz, VIN = VCC/GND: 1.0 mA
- FOSC = 4.9152 MHz, VIN = VCC/GND: 8 mA
- FOSC = 4.9152 MHz, VIN = VIH/VIL: 20 mA
️· Single Supply Mode Quiescent Supply Current:
- FOSC = 32.768 kHz: 40 mA
- FOSC = 4.9152 MHz: 7.5 mA
️· Battery Leakage Current (IBLK): Varies by temperature
- @ 25°C: b5mA
- @ -55°C: b5mA
- @ 125°C: b5mA

3. Important Notes & Conditions:

️· Oscillator: The document refers to FOSC (Oscillator Frequency). It can be 32.768 kHz or 4.9152 MHz. ICC values vary significantly depending on the oscillator frequency.
️· VIN: Input voltage. Specific ICC values are given for VIN = VCC, VIN = GND, VIN = VIH, and VIN = VIL.
️· IOUT: Output current. VOH and VOL depend on output current.
️· Single Supply Mode: Defined with VBB connected to ground.
️· Battery Leakage: Specified for specific voltage and temperature conditions.