PCA9306 Datasheet, PDF (6/23 Pages) Texas Instruments – DUAL BIDIRECTIONAL I2C BUS AND SMBus VOLTAGE-LEVEL TRANSLATOR

NXP Semiconductors
PCA9306
Dual bidirectional I²C-bus and SMBus voltage-level translator
6. Functional description
Refer to Figure 1 “Logic diagram of PCA9306 (positive logic)”.
6.1 Function table
Table 3. Function selection (example)
H = HIGH level; L = LOW level.
Input EN^[1] Function
H
SCL1 = SCL2; SDA1 = SDA2
L
disconnect
[1] EN is controlled by the V_bias(ref)(2) logic levels and should be at least 1 V higher than V_ref(1) for best translator
operation.
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Over operating free-air temperature range.
Symbol Parameter
Conditions
Min
Max
Unit
V_ref(1)
V_bias(ref)(2)
V_I
V_I/O
reference voltage (1)
reference bias voltage (2)
input voltage
voltage on an input/output pin
−0.5
+6
V
−0.5
+6
V
−0.5^[1]
+6
V
−0.5^[1]
+6
V
I_ch
channel current (DC)
I_IK
input clamping current
T_stg
storage temperature
V_I < 0 V
-
128
mA
-
−50
mA
−65
+150
°C
[1] The input and input/output negative voltage ratings may be exceeded if the input and input/output clamp
current ratings are observed.
8. Recommended operating conditions
Table 5. Operating conditions
Symbol Parameter
Conditions
V_I/O
voltage on an input/output pin SCL1, SDA1,
SCL2, SDA2
V_ref(1)[1]
V_{bias(ref)(2)[1]}
V_I(EN)
I_sw(pass)
T_amb
reference voltage (1)
reference bias voltage (2)
input voltage on pin EN
pass switch current
ambient temperature
VREF1
VREF2
operating in free-air
[1] V_ref(1) ≤ V_bias(ref)(2) − 1 V for best results in level shifting applications.
Min
Max Unit
0
5
V
0
5
V
0
5
V
0
5
V
-
64
mA
−40
+85
°C
PCA9306_4
Product data sheet
Rev. 04 — 26 October 2009
© NXP B.V. 2009. All rights reserved.
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