ISL33001_14 Datasheet, PDF (7/18 Pages) Intersil Corporation – I2C Bus Buffer with Rise Time Accelerators and Hot Swap Capability

ISL33001, ISL33002, ISL33003
Test Circuits and Waveforms (Continued)
+3.3V
2.7kΩ
2.7kΩ
SCL_OUT
SCL_IN
V_CC1
2.7kΩ
SDA_OUT
SDA_IN
V_IN
100pF
GND
100pF
100pF
100pF
FIGURE 7A. TEST CIRCUIT
2.7kΩ
SCL_IN OR
SDA_IN
SCL_OUT OR
SDA_OUT
V_IN
*t_PLH
*t_PHL
*Propagation delay measured between 50% of V_CC1
FIGURE 7B. MEASUREMENT POINTS
FIGURE 7. PROPAGATION DELAY
I_{TRAN_ACC} = CV/t
V/t is for only the accelerator
portion of the waveform
2.7kΩ
V_CC1
2.7kΩ 2.7kΩ
100kΩ
SCL_OUT
SCL_IN
2nF
V_{CC1 SDA_OUT}
GND
SDA_IN
*_VX
V_CC1
*_VX
10kΩ
10kΩ
SCL_OUT
SCL_IN
V_CC1
10kΩ
SDA_OUT
10kΩ
GND
SDA_IN
*_{VX < VCC1}
(See Figure 22)
FIGURE 8. ACCELERATOR CURRENT TEST CIRCUIT
FIGURE 9. ACCELERATOR PULSE WIDTH TEST CIRCUIT
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7
FN7560.6
July 11, 2014