參數(shù)資料
型號(hào)： PS2045(中文)
英文描述： Precision Voltage Supervisor(帶看門(mén)狗定時(shí)器和4K IIC存儲(chǔ)器的精密電壓監(jiān)控電路（適用于3和5伏系統(tǒng)）)
中文描述： 精密電壓監(jiān)控（帶看門(mén)狗定時(shí)器和4K的進(jìn)口證存儲(chǔ)器的精密電壓監(jiān)控電路（適用于3和5伏系統(tǒng)））
文件頁(yè)數(shù)： 5/16頁(yè)
文件大?。?/td> 242K
代理商： PS2045(中文)
==99-10-15==
P&S
ooá|′μ×ó1é· YóDT1
==16-5==
P &S
oo á|′μ×ó1é· YóDT1
μ :
ot±±ooêD×μèa· 15o
D :
ooêD70020D
óê±à:
430079
μ°:
( 86) ( 027￡87493500 87493506
′
( 86) ( 027) 87491166, 87493497
P &S
í í :
http://www.p8s.com
2. 3 μìD
2. 3. 1 ±á÷μìD
￡¨3y· áí óD1¨￡ùúíμ1¤×÷ìt￡
Symbol
Parameter
Conditions
Min
Max
Units
SCL = CMOS Levels @ 100KHz
SDA = Open
All other inputs = GND or V
CC
V
CC
=5.5V
3
mA
I
CC
Supply Current (CMOS)
V
CC
=3.3V
V
CC
=5.5V
V
CC
=3.3V
2
mA
μ
A
μ
A
I
SB
Standby Current (CMOS)
SCL = SDA = V
All other inputs = GND
50
25
I
LI
Input Leakage
V
IN
= 0 To V
CC
10
μ
A
I
LO
Output Leakage
V
OUT
= 0 To V
CC
10
μ
A
V
IL
Input Low Voltage
SCL, SDA, RESET (pin 2)
0.3xV
CC
V
V
IH
Input High Voltage
SCL, SDA, RESET (pin7)
0.7xV
CC
V
V
OL
Output Low Voltage
I
OL
= 3mA SDA
0.4
V
2. 3. 2 á÷μìD
￡¨3y· áí óD1¨￡ùúíμ1¤×÷ìt￡
2.7V to 4.5V
4.5V to 5.5V
Symbol
Parameter
Conditions
Min
Max
Min
Max
Units
f
SCL
SCL Clock Frequency
0
100
400
KHz
t
LOW
Clock Low Period
4.7
1.3
μ
s
t
HIGH
Clock High Period
4.0
0.6
μ
s
t
BUF
Bus Free Time
Before New Transmission
4.7
1.3
μ
s
t
SU:STA
Start Condition Setup Time
4.7
0.6
μ
s
t
HD:STA
Start Condition Hold Time
4.0
0.6
μ
s
t
SU:STO
Stop Condition Setup Time
4.7
0.6
μ
s
t
AA
Clock to Output
SCL Low to SDA Data Out Valid
0.3
3.5
0.2
0.9
μ
s
t
DH
Data Out Hold Time
SCL Low to SDA Data Out Change
0.3
0.2
μ
s
t
R
SCL and SDA Rise Time
1000
300
ns
t
F
SCL and SDA Fall Time
300
300
ns
t
SU:DAT
Data In Setup Time
250
100
ns
t
HD:DAT
Data In Hold Time
0
0
ns
T
I
Noise Spike Width
@ SCL, SDA Inputs
Noise Suppression Time Constant
100
100
ns
t
WR
Write Cycle Time
10
10
ms
2. 3. 3 μèY
￡¨
T
A
=25
￡
f=100kHz
￡
· o
2êy
× ′óμ
μ￥
CIN
êèμèY
5
pF
C
OUT
ê3μèY
8
pF
2. 3. 4 ′μ· á÷oí ±á÷ìD
￡¨
T
A
= -40
á
+85
￡
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