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M48T86MH1E

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M48T86 DC and AC parameters
25/36
5 DC and AC parameters
This section summarizes the operating and measurement conditions, as well as the DC and
AC characteristics of the device. The parameters in the following DC and AC Characteristic
tables are derived from tests performed under the measurement conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Note: Output Hi-Z is defined as the point where data is no longer driven.
Figure 12. AC testing load circuit (no IRQ
)
Table 10. Operating and AC measurement conditions
Parameter M48T86 Unit
Supply voltage (V
CC
) 4.5 to 5.5 V
Ambient operating temperature (T
A
) 0 to 70 °C
Load capacitance (C
L
)100pF
Input rise and fall times ≤ 5ns
Input pulse voltages 0 to 3 V
Input and output timing ref. voltages 1.5 V
AI01644
5V
50pF
960Ω
FOR ALL
OUTPUTS
EXCEPT IRQ
510Ω
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DC and AC parameters M48T86
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Figure 13. AC testing load circuit (with IRQ)
Table 11. Capacitance
Symbol Parameter
(1)(2)
1. Effective capacitance measured with power supply at 5 V; sampled only, not 100% tested.
2. At 25°C, f = 1 MHz.
Min Max Unit
C
IN
Input capacitance 7 pF
C
IO
(3)
3. Outputs deselected.
Input / output capacitance 5 pF
Table 12. DC characteristics
Symbol Parameter Test Condition
(1)
1. Valid for ambient operating temperature: T
A
= 0 to 70°C; V
CC
= 4.5 to 5.5 V (except where noted).
Min Max Unit
I
LI
Input leakage current 0V ≤ V
IN
≤ V
CC
±1 µA
I
LO
(2)
2. Outputs deselected.
Output leakage current 0V ≤ V
OUT
≤ V
CC
±1 µA
I
CC
Supply current Outputs open 15 mA
V
IL
Input low voltage –0.3 0.8 V
V
IH
Input high voltage 2.2 V
CC
+ 0.3 V
V
OL
Output low voltage I
OL
= 4 mA 0.4 V
Output low voltage (IRQ
)I
OL
= 0.5 mA 0.4 V
V
OH
Output high voltage I
OH
= –1 mA 2.4 V
AI01645
5V
130pF
1.15kΩ
IRQ
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M48T86 DC and AC parameters
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Figure 14. Power down/up mode AC waveforms
P
AI01646
V
CC
E
tF tR
trec
4.5V
V
PFD
V
SO
Table 13. Power down/up mode AC characteristics
Symbol Parameter
(1)
Min Max Unit
t
F
(2)
V
CC
fall time 300 µs
t
R
V
CC
rise time 100 µs
t
rec
V
PFD
to E high 20 200 ms
1. Valid for ambient operating temperature: T
A
= 0 to 70°C; V
CC
= 4.5 to 5.5 V (except where noted).
2. V
CC
fall time of less than t
F
may result in deselection/write protection not occurring until 200 µs after V
CC
passes V
PFD
.
Table 14. Power down/up trip points DC characteristics
Symbol Parameter
(1)(2)
Min Typ Max Unit
V
PFD
Power-fail deselect voltage 4.0 4.35 V
V
SO
Battery backup switchover voltage 3.0 V
t
DR
(3)
Expected data retention time 10 YEARS
1. Valid for ambient operating temperature: T
A
= 0 to 70°C; V
CC
= 4.5 to 5.5 V (except where noted).
2. All voltages referenced to V
SS
.
3. At 25°C, V
CC
= 0 V.
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M48T86MH1E

Mfr. #:
Buy M48T86MH1E
Manufacturer:
STMicroelectronics
Description:
IC RTC CLK/CALENDAR PAR 28-SOIC
Lifecycle:
New from this manufacturer.
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