MAX4929E Maxim, MAX4929E Datasheet - Page 8

• Manufacturer Part Number: MAX4929E
• Description: The MAX4929E low-frequency 2:1 switch is ideal for HDMI™/DVI™ switching applications
• Manufacturer: Maxim

HDMI 2:1 Low-Frequency Translating Switch
Table 1. Inputs Selection for 2:1 Mux
Truth Table
Table 2. HPD Output Channel Selection
Table 3. HPIRO Output Channel Selection
8
SEL
SEL
SEL
X
X
X
0
1
_______________________________________________________________________________________
X
X
0
0
1
1
X
X
0
0
1
1
X
X
INPUTS
HPD
HPIR1
HIZ1
0
1
1
X
X
INPUTS
0
1
0
1
0
1
0
1
0
1
X
X
X
X
HIZ1
INPUTS
0
1
0
1
0
1
1
0
HPIR2
HIZ2
1
0
1
0
0
1
0
1
X
X
0
1
X
X
HIZ2
1
0
1
0
1
0
1
0
SDAO to SDA1, SCLO to SCL1
SDAO to SDA1, SCLO to SCL1
SDAO to SDA2, SCLO to SCL2
SDAO to SDA2, SCLO to SCL2
High Impedance
High Impedance
HIZ1
SWITCH CONNECTIONS
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Impedance
Impedance
HPDO1
High
High
0
1
0
HIZ2
1
0
1
0
1
0
1
0
1
0
1
0
0
1
OUTPUTS
Impedance
Impedance
Impedance
Impedance
OUTPUT
HPDO2
HPIRO
High
High
High
High
0
0
1
0
1
0
1
0
1
The HPDO_ signals are 5V TTL-compatible, per HDMI/
DVI specifications. HPIRO is VL compatible.
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against ESD
encountered during handling and assembly.
Additionally, the MAX4929E is protected to ±6kV (HBM)
on SCL1, SCL2, SDA1, SDA2, HPDO1, HPDO2, HPIR1,
and HPIR2 by the HBM.
Several ESD testing standards exist for measuring the
robustness against ESD events. The ESD protection of
the MAX4929E is characterized with the HBM method.
Figure 4 shows the model used to simulate an ESD event
resulting from contact with the human body. The model
consists of a 100pF storage capacitor that is charged to a
high voltage, then discharged through a 1.5kΩ resistor.
Figure 5 shows the current waveform when the storage
capacitor is discharged into a lower impedance.
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report documenting test
setup, methodology, and results.
Table 4. Mode of Operation
Figure 4. Human Body ESD Test Model
HIZ1
0
0
1
1
INPUTS
VOLTAGE
SOURCE
HIGH-
DC
HIZ2
0
1
0
1
CHARGE-CURRENT-
LIMIT RESISTOR
High Impedance: SDAO, SDA1, SDA2,
SCLO, SCL1, SCL2, HPDO1, HPDO2, HPIRO
Normal Operation
Normal Operation
High Impedance: SDAO, SDA1, SDA2,
SCLO, SCL1, SCL2, HPDO1, HPDO2, HPIRO
1MΩ
R
100pF
C
C s
MODE OF OPERATION
STORAGE
CAPACITOR
RESISTANCE
1500Ω
DISCHARGE
R
D
OUTPUTS
ESD Test Conditions
Human Body Model
ESD Protection
Logic Outputs
DEVICE
UNDER
TEST