LTC4316
5
4316fa
For more information www.linear.com/LTC4316
TYPICAL PERFORMANCE CHARACTERISTICS
SDAOUT Fall Delay vs Bus
Capacitance
SDAOUT Fall Time vs
Temperature
SDAOUT Fall Time vs Bus
Capacitance
T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.
PIN FUNCTIONS
XORL: Translator XOR Lower Nibble Configuration Input.
The DC voltage at this pin configures the lower 4-bit nibble
of the address translation byte. Tie the pin to an external
resistive divider connected between V
CC
and GND to set
the desired DC voltage.
XORH: Translator XOR Upper Nibble Configuration Input.
The DC voltage at this pin configures the upper 3-bit nibble
of the address translation byte. Tie the pin to an external
resistive divider connected between V
CC
and GND to set
the desired DC voltage. Connect this pin to V
CC
to activate
pass-through mode. See Application Information section
for more details.
ENABLE: Enable Input. If ENABLE pin is low, the address
translation is disabled, SDAIN is disconnected from SD
-
AOUT, and
SCLIN is disconnected from SCLOUT. A low
to
high transition on ENABLE restarts the configuration of
the address translation byte and also enables the address
translation. Connect to V
CC
if unused.
Exposed Pad (DFN Package Only): Exposed pad may be
left open or connected to device GND.
GND: Device Ground.
READY: Ready Status Output. This is an open drain output
to indicate that the device is ready for address translation.
The pin releases
high when the LTC4316 has completed
configuration
of the address translation byte, SDAIN is
connected to SDAOUT and SCLIN is connected to SCLOUT.
Connect a pull-up resistor, typically 10k, from this pin to
the bus pull-up supply. Leave open or tie to GND if unused.
SCLIN: Input Bus Clock Input and Output. Connect this
pin to the SCL line on the master side. An external pull-up
resistor or current source is required.
SCLOUT: Output Bus Clock Input and Output. Connect this
pin to the SCL line on the slave side. An external pull-up
resistor or current source is required.
SDAIN: Input Bus Data Input and Output. Connect this pin
to the SDA line on the master side. An external pull-up
resistor or current source is required.
SDAOUT: Output Bus Data Input and Output. Connect this
pin to the SDA line on the slave side. An external pull-up
resistor or current source is required.
V
CC
: Power Supply Input (2.25V to 5.5V). If the supply
voltages for the input and output buses are different, con-
nect this
pin to the lower supply. If the input and output
supplies
have the same nominal value and with tolerance
less
than or equal to ±10%, connect V
CC
to either supply.
Bypass with at least 0.1μF to GND.
C
BUS
(pF)
0
PDHL(SDAOUT)
100
125
150
175
200
225
250
275
200 600400 800
V
CC
= 5V
V
CC
= 2.25V
V
CC
= 3.3V
TEMPERATURE (°C)
–50
f(SDAOUT)
100
60
80
40
20
0 50–25 25 75
C = 100pF
V
CC
= 5V
V
CC
= 2.25V
V
CC
= 3.3V
C
BUS
(pF)
0
f(SDAOUT)
100
60
80
40
20
200 600400 800
V
CC
= 5V
V
CC
= 2.25V
V
CC
= 3.3V
