mc33879a Freescale Semiconductor, Inc, mc33879a Datasheet - Page 12

• Manufacturer Part Number: mc33879a
• Description: Configurable Octal Serial Switch With Open Load Detect Current Disable
• Manufacturer: Freescale Semiconductor, Inc

12
33879
ELECTRICAL CHARACTERISTICS
TIMING DIAGRAMS
NOTE: C
fixture and probe.
SCLK
SCLK
L
DO
CS
represents the total capacitance of the test
Figure 5. Valid Data Delay Time
DI
and Valid Time Test Circuit
V
33879
Under
DD
Test
0.2 V
= 5.0 V
DD
0.7 V
0.2 V
t
DO(EN)
DD
DD
t
LEAD
0.7 V
0.2 V
0.7 V
0.2 V
CS
DO
(Tri-State to Low)
DO
(Tri-State to High)
DD
DD
DD
DD
Figure 7. Enable and Disable Time Waveforms
0.2 V
t
DI(SU)
MSB in
C
MSB out
DD
L
DO
= 200 pF
Figure 4. SPI Timing Diagram
t
t
F(CS)
DI(HOLD)
TIMING DIAGRAMS
< 50 ns
t
t
DO(EN)
DO(EN)
90%
10%
90%
10%
t
R(CS)
90%
SCLK
DO
(Low-to-High)
DO
(High-to-Low)
< 50 ns
0.7 V
t
t
DO(DIS)
DO(DIS)
10%
DD
V
3.3/5.0 V
t
Figure 6. Valid Data Delay Time
V
VALID
0.7 V
Tri-State
Tri-State
and Valid Time Waveforms
0.2 V
0.7 V
t
0 V
V
R(DI)
V
OH
DD
OL
DD
DD
Analog Integrated Circuit Device Data
< 50 ns
50%
t
R(DO
LSB out
t
LAG
Freescale Semiconductor
t
VALID
t
0.2
F(DI
0.7 V
t
DD
DO(DIS)
< 50 ns
0.2 V
3.3/5.0 V
DD
0 V
V
V
V
V
OH
OL
OH
OL