Rainbow Electronics DS1558Y - Manual (Page 12)

DS1558
12 of 18
DC ELECTRICAL CHARACTERISTICS
(
V
CC
= +3.3V ±10% or +5V ±10%, T
A
= -40°C to +85°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Active Supply Current, +5V I
CC
6 25 mA 2, 3
Active Supply Current, +3.3V I
CC
4 15 mA 2, 3
TTL Standby, +5V ( CE = V
IH
) I
CC1
3 6 mA 2, 3
TTL Standby, +3.3V ( CE = V
IH
) I
CC1
2 6 mA 2, 3
CMOS Standby Current, +5V
(
CE ³ V
CC
- 0.2V)
I
CC2
2 6 mA 2, 3
CMOS Standby Current, +3.3V
(
CE ³ V
CC
- 0.2V)
I
CC2
1 2 mA 2, 3
Input Leakage Current
(Any Input)
I
IL
-1 +1 mA
Output Leakage Current
(Any Output)
I
OL
-1 +1 mA
Output Logic 1 Voltage
(I
OUT
= -1.0mA)
V
OH
2.4 V 1
Output Logic 0 Voltage
I
OUT
= 2.1mA, DQ0–DQ7
Outputs
V
OL1
0.4 V 1
I
OUT
= 7.0mA, IRQ /FT and
RST Outputs
V
OL2
0.4 V 1, 5
Write Protection Voltage, +5V V
PF
4.25 4.37 4.50 V 1
Write Protection Voltage, +3.3V V
PF
2.80 2.88 2.97 V 1
Battery Switchover Voltage, +5V V
SO
V
BAT
V 1
Battery Switchover Voltage, +3.3V V
SO
V
PF
V 1, 4
Battery Current OSC On I
OSC
0.3 0.5 µA 6,7
Battery Current OSC Off I
BACKUP
100 nA 7
Output Voltage I
CCO
= 70mA, +5V V
CC01
V
CC1
- 0.3 V
Output Voltage I
CCO
= 40mA, +3.3V V
CC01
V
CC1
- 0.3 V
Output Voltage I
CCO
= 10µA V
CC02
V
BAT
- 0.2 V
BAT
- 0.031 V 10
CRYSTAL SPECIFICATIONS *
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Nominal Frequency F
O
32.768 kHz
Series Resistance ESR 45 kΩ
Load Capacitance C
L
6 pF
*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58 “Crystal Considerations
for Dallas Real-Time Clocks” for additional specifications.