參數(shù)資料
型號： BQ3287EMT
廠商： TEXAS INSTRUMENTS INC
元件分類： XO, clock
英文描述： 1 TIMER(S), REAL TIME CLOCK, DMA24
封裝： ROHS COMPLIANT, MODULE, DIP-24
文件頁數(shù)： 2/7頁
文件大?。?/td> 98K
代理商： BQ3287EMT
2
Recommended DC Operating Conditions (TA =TOPR)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
VCC
Supply voltage
4.5
5.0
5.5
V
VSS
Supply voltage
0
V
VIL
Input low voltage
-0.3
-
0.8
V
VIH
Input high voltage
2.2
-
VCC + 0.3
V
Note:
Typical values indicate operation at TA = 25°C.
Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
Conditions
VCC
DC voltage applied on VCC relative to VSS
-0.3 to 7.0
V
VT
DC voltage applied on any pin excluding VCC
relative to VSS
-0.3 to 7.0
VVT ≤ VCC + 0.3
TOPR
Operating temperature
0 to +70
°C
Commercial
TSTG
Storage temperature
-40 to +70
°C
Commercial
TBIAS
Temperature under bias
-10 to +70
°C
Commercial
TSOLDER
Soldering temperature
260
°C
For 10 seconds
Note:
Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation
should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Exposure to
conditions beyond the operational limits for extended periods of time may affect device reliability.
Sept. 1996 C
DC Electrical Characteristics (TA =TOPR,VCC =5V ± 10%)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Conditions/Notes
ILI
Input leakage current
-
± 1
A
VIN =VSS to VCC
ILO
Output leakage current
-
± 1
A
AD0–AD7, INT and
SQW in high impedance
VOH
Output high voltage
2.4
-
V
IOH = -1.0 mA
VOL
Output low voltage
-
0.4
V
IOL = 4.0 mA
ICC
Operating supply current
-
7
15
mA
Min. cycle, duty = 100%,
IOH = 0mA, IOL = 0mA
VSO
Supply switch-over voltage
-
3.0
-
V
VPFD
Power-fail-detect voltage
4.0
4.17
4.35
V
IRCL
Input current when RCL =VSS
-
185
A
Internal 30K pull-up
(bq3287EA only)
IMOTH
Input current when MOT =
VCC
-
-185
A
Internal 30K pull-down
IXTRAM
Input current when
EXTRAM = VCC
-
-185
A
Internal 30K pull-down
Note:
Typical values indicate operation at TA = 25°C, VCC =5V.
bq3287E/bq3287EA
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