參數(shù)資料
型號(hào)： BQ3287A
廠商： TEXAS INSTRUMENTS INC
元件分類： XO, clock
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDIP24
封裝： T TYPE MODULE, DIP-24
文件頁(yè)數(shù)： 2/6頁(yè)
文件大小： 77K
代理商： BQ3287A
2
Sept. 1996 D
Recommended DC Operating Conditions
(TA= TOPR)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
V
CC
V
SS
V
IL
V
IH
Supply voltage
4.5
5.0
5.5
V
Supply voltage
0
0
0
V
Input low voltage
-0.3
-
0.8
V
Input high voltage
2.2
-
V
CC
+ 0.3
V
Note
:
Typical values indicate operation at T
A
= 25°C.
Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
Conditions
V
CC
DC voltage applied on V
CC
relative to V
SS
DC voltage applied on any pin excluding V
CC
relative to V
SS
-0.3 to 7.0
V
V
T
-0.3 to 7.0
V
V
T
≤
V
CC
+ 0.3
T
OPR
Operating temperature
0 to +70
°C
Commercial
-20 to +70
°C
Extended “I”
T
STG
Storage temperature
-40 to +70
°C
Commercial
-40 to +70
°C
Extended “I”
T
BIAS
Temperature under bias
-10 to +70
°C
Commercial
-20 to +70
°C
Extended “I”
T
SOLDER
Soldering temperature
260
°C
For 10 seconds
Note:
Permanent device damage may occur if
Absolute Maximum R atings
are exceeded. Functional opera-
tion should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Expo-
sure to conditions beyond the operational limits for extended periods of time may affect device reliability.
DC Electrical Characteristics
(TA= TOPR, VCC= 5V
±
10%)
Symbol
Parameter
Minimum
Typical
Maximum
±
1
Unit
μ
A
Conditions/Notes
I
LI
Input leakage current
-
-
V
IN
= V
SS
to V
CC
AD
0
–AD
7
, INT and SQW
in high impedance
I
LO
Output leakage current
-
-
±
1
μ
A
V
OH
V
OL
Output high voltage
2.4
-
-
V
I
OH
= -1.0 mA
I
OL
= 4.0 mA
Min. cycle, duty = 100%,
I
OH
= 0mA, I
OL
= 0mA
Output low voltage
-
-
0.4
V
I
CC
Operating supply current
-
7
15
mA
V
SO
V
PFD
Supply switch-over voltage
-
3.0
-
V
Power-fail-detect voltage
4.0
4.17
4.35
V
I
RCL
Input current when RCL = V
SS
-
-
185
μ
A
Internal 30K pull-up
(bq3287A only)
I
MOTH
Input current when MOT =
V
CC
-
-
-185
μ
A
Internal 30K pull-down
Note:
Typical values indicate operation at T
A
= 25°C, V
CC
= 5V.
bq3287/bq3287A
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