ISL72028SEH Datasheet, PDF (7/19 Pages) Intersil Corporation – 3.3V Radiation Tolerant CAN Transceiver, 1Mbps, Low Power Shutdown, Split Termination Output

ISL72028SEH
Test Circuits and Waveforms
D
CAN_H
CAN_L
GND
60Ω
V V_{O(CAN_L)} V V_{O(CAN_H)}
FIGURE 10. DRIVER TEST CIRCUIT
DOMINANT _{VO(CAN_H)}
3V
RECESSIVE
V_OD
2.3V
V_{O(CAN_L)}
1V
FIGURE 11. DRIVER BUS VOLTAGE DEFINITIONS
D
CAN_H
330Ω
60Ω
CAN_L
GND
330Ω
V -7V < V_CM < 12V
FIGURE 12. DRIVER COMMON-MODE CIRCUIT
D
V_IN
CAN_H
CAN_L
GND
60Ω
±1%
C_L
50pF
±20%
V ^VO
SCOPE
V_IN = 125kHz, 0V to V_CC, Duty Cycle 50%, t_r = t_f ≤ 6ns, Z_O = 50Ω
C_L includes fixture and instrumentation capacitance
FIGURE 13A. DRIVER TIMING TEST CIRCUIT
t_r
t_f
0.9V
V_O
t_PLH
V_IN
90%
10%
0.5V
t_PHL
V_DOM
V_REC
V_CC
0.5 x V_CC
0V
FIGURE 13B. DRIVER TIMING MEASUREMENT POINTS
FIGURE 13. DRIVER TIMING
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7
FN8764.1
November 9, 2015