Datasheet
DS1305
16 of 22
DC ELECTRICAL CHARACTERISTICS
(Over the operating range, unless otherwise specified.)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage I
LI
-100 +500 µA
Output Leakage I
LO
-1 1 µA
I
OL
= 1.5mA
V
CC
= 2.0V 0.4
Logic 0
Output
I
OL
= 4.0mA
V
OL
V
CC
= 5V 0.4
V
I
OH
= -0.4mA
V
CCIF
= 2.0V 1.6
Logic 1
Output
I
OH
= -1.0mA
V
OH
V
CCIF
= 5V 2.4
V
V
CC1
= 2.0V 0.425
V
CC1
Active Supply Current I
CC1A
V
CC1
= 5V 1.28
mA 2, 8
V
CC1
= 2.0V 25.3
V
CC1
Timekeeping Current
(Osc on)
I
CC1T
V
CC1
= 5V 81
A 1, 8, 12
V
CC1
= 2.0V 25
V
CC1
Standby Current
(Osc off)
I
CC1S
V
CC1
= 5V 80
A 6, 8, 12
V
CC2
= 2.0V 0.4
V
CC2
Active Supply Current I
CC2A
V
CC2
= 5V 1.2
mA 2, 9
V
CC2
= 2.0V 0.3
V
CC2
Timekeeping Current
(Osc on)
I
CC2T
V
CC2
= 5V 1
µA 1, 9, 12
V
CC2
= 2.0V 200
V
CC2
Standby Current
(Osc off)
I
CC2S
V
CC2
= 5V 200
nA 6, 9, 12
Battery Timekeeping Current I
BAT
V
BAT
= 3V 400 nA 10, 12
Battery Standby Current I
BATS
V
BAT
= 3V 200 nA 10, 12
V
CC
Trip Point V
CCTP
V
BAT
- 50
V
BAT
+
200
mV
R1 2
R2
4
Trickle Charge Resistors
R3
8
k
Trickle Charge Diode
Voltage Drop
V
TD
0.7 V
CAPACITANCE
(T
A
= +25C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
I
10 pF
Output Capacitance C
O
15 pF