參數(shù)資料
型號(hào): BQ4285Q
廠商: TEXAS INSTRUMENTS INC
元件分類: XO, clock
英文描述: 1 TIMER(S), REAL TIME CLOCK, PQCC28
封裝: PLASTIC, LCC-28
文件頁數(shù): 5/26頁
文件大?。?/td> 1079K
代理商: BQ4285Q
13
Jan. 1999 D
DC Electrical Characteristics (TA =TOPR,VCC = 5V ± 10%)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Conditions/Notes
ILI
Input leakage current
-
± 1
AVIN =VSS to VCC
ILO
Output leakage current
-
± 1
AAD0–AD7, INT, and
SQW in high impedance,
VOUT =VSS to VCC
VOH
Output high voltage
2.4
-
V
IOH = -2.0 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
-
V
BC
-V
ICCB
Battery operation current
-
0.3
0.5
A
VBC = 3V, TA = 25°C, no
load on VOUT or CEOUT
VPFD
Power-fail-detect voltage
4.0
4.17
4.35
V
VOUT1
VOUT voltage
VCC - 0.3V
-
V
IOUT = 100mA, VCC >VBC
VOUT2
V
OUT voltage
VBC - 0.3V
IOUT = 100
A, VCC <VBC
IMOTH
Input current when MOT =
VCC
-
-275
A
Internal 20K pull-down
ICE
Chip enable input current
-
100
A
Internal 50K pull-up
Note:
Typical values indicate operation at TA = 25°C, VCC = 5V or VBC = 3V.
Crystal Specifications (DT-26 or Equivalent)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
fO
Oscillation frequency
-
32.768
-
kHz
CL
Load capacitance
-
6
-
pF
TP
Temperature turnover point
20
25
30
°C
k
Parabolic curvature constant
-
-0.042
ppm/°C
Q
Quality factor
40,000
70,000
-
R1
Series resistance
-
45
K
C0
Shunt capacitance
-
1.1
1.8
pF
C0/C1
Capacitance ratio
-
430
600
DL
Drive level
-
1
W
f/fO
Aging (first year at 25°C)
-
1
-
ppm
bq4285
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BRN1-09P-TA1 9 CONTACT(S), MALE, D NANOMINIATURE CONNECTOR, SOLDER, PLUG
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