PCA9554 查看數據表（PDF） - ON Semiconductor
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PCA9554 Datasheet PDF : 11 Pages
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PCA9554
Table 5. A.C. CHARACTERISTICS (VCC = 2.3 V to 5.5 V; TA = −40°C to +85°C, unless otherwise specified.) (Note 8)
Standard I2C
Fast I2C
Symbol
Parameter
Min
Max
Min
Max
FSCL
tHD:STA
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tR (Note 9)
tF (Note 9)
tSU:STO
tBUF (Note 9)
tAA
tDH
Ti (Note 9)
Clock Frequency
START Condition Hold Time
Low Period of SCL Clock
High Period of SCL Clock
START Condition Setup Time
Data In Hold Time
Data In Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
STOP Condition Setup Time
Bus Free Time Between STOP and START
SCL Low to Data Out Valid
Data Out Hold Time
Noise Pulse Filtered at SCL and SDA Inputs
100
400
4
0.6
4.7
1.3
4
0.6
4.7
0.6
0
0
250
100
1000
300
300
300
4
0.6
4.7
1.3
3.5
0.9
100
50
100
100
Units
kHz
ms
ms
ms
ms
ms
ns
ns
ns
ms
ms
ms
ns
ns
Symbol
Parameter
Min
Max
PORT TIMING
tPV
Output Data Valid
tPS
Input Data Setup Time
tPH
Input Data Hold Time
INTERRUPT TIMING
200
100
1
tIV
Interrupt Valid
4
tIR
Interrupt Reset
4
8. Test conditions according to “AC Test Conditions” table.
9. This parameter is characterized initially and after a design or process change that affects the parameter. Not 100% tested.
Table 6. A.C. TEST CONDITIONS
Input Rise and Fall time
CMOS Input Voltages
CMOS Input Reference Voltages
TTL Input Voltages
TTL Input Reference Voltages
Output Reference Voltages
Output Load: SDA, INT
Output Load: I/Os
≤ 10 ns
0.2 VCC to 0.8 VCC
0.3 VCC to 0.7 VCC
0.4 V to 2.4 V
0.8 V, 2.0 V
0.5 VCC
Current Source IOL = 3 mA; CL = 100 pF
Current Source: IOL/IOH = 10 mA; CL = 50 pF
Units
ns
ns
ms
ms
ms
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