Datasheet

LTC4307-1
10
43071fa
APPLICATIONS INFORMATION
Figure 3. The LTC4307-1 in HDMI Capacitance Buffering Application
Figure 4. The LTC4307-1 in a Level Shifting and Capacitance Buffering HDMI Application with Backup 3.3V
Figure 4 shows the LTC4307-1 being used for capacitance
buffering and 5V to 3.3V level shifting. In this application,
the EEPROM is powered by a backup 3.3V supply that is
available when the component is turned off. The EDID in
the EEPROM should be available for reading even when
a component’s power is off.
Although the applications shown in this section are for
HDMI receive channels, the LTC4307-1 can also be used
in HDMI transmit channels with equal success as shown
in the Typical Application on the last page of this data
sheet.
LTC4307-1
GND
READY
SDAOUT
SCLOUT
R6
100k
R5
1k
R4
47k
C1
0.1μF
R2
1.8k
R3
100k
R1
1.8k
5V
TO
HDMI
TX IC
SDA
SCL
HPD
DDC/CEC
GROUND
5V
DDC
HDMI SINK
(DIGITAL TV)
HDMI SOURCE
(DVD PLAYER)
R7
10k
R8
10k
R9
10k
R10
10k
43071 F03
3.3V
HDMI
RX IC
EEPROM
HDMI CABLE
V
CC
SCL SDA GND
V
CC
SDAIN
SCLIN
ENABLE
LTC4307-1
GND
READY
SDAIN
SCLIN
R5
100k
R6
10k
R7
10k
C1
0.1μF
R3
47k
R4
47k
R1
1.8k
R2
1.8k
5V
TO
HDMI
TX IC
SDA
SCL
DDC/CEC
GROUND
5V
DDC
HDMI REPEATER
(DIGITAL RECEIVER)
HDMI SOURCE
(DVD PLAYER)
43071 F04
HDMI
RX IC
EEPROMBACKUP 3.3V
HDMI CABLE
V
CC
SWITCHED
3.3V
SCL SDA
V
CC
SDAOUT
SCLOUT
ENABLE
μC