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| UM3212 Datasheet, PDF (4/11 Pages) Union Semiconductor, Inc. – Dual bidirectional I2C-bus and SMBus voltage-level translator | |||
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UM3212
Recommended Operating Conditions
Symbol
VI/O
Vref(1)(Note 3)
Parameter
Voltage on an input/output
pin
Reference Voltage (1)
Conditions
SCL1, SDA1,
SCL2, SDA2
VREF1
Min Max Unit
0
5
V
0
5
V
Vbias(ref)(2)
(Note 3)
Reference Bias Voltage (2)
VREF2
0
VI(EN)
Input Voltage on pin EN
0
Isw(pass)
Pass Switch Current
Tamb
Ambient Temperature Operating in free-air -40
Note 3ï¼Vref(1) ⤠Vbias(ref)(2) â1 V for best results in level shifting applications.
Electrical Characteristics
5
V
5
V
64 mA
+85 °C
Tamb = â40 °C to +85 °C, unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ(Note 4) Max Unit
VIK
IIH
Ci(EN)
Input Clamping Voltage
HIGH-level
Input Current
Input Capacitance on
pin EN
II = â18 mA; VI(EN) = 0 V
VI= 5 V;
VI(EN) = 0 V
VI= 0 V or 3 V
-1.2 V
5 uA
13
pF
Cio(off)
Off-state input/output
capacitance
SCLn, SDAn;
VO= 0 V or 3 V ; VI(EN) = 0V
10
12.2 pF
Cio(on)
On-state input/output
capacitance
SCLn, SDAn;
VO= 0 V or 3 V ; VI(EN) = 3V
8
12 pF
SCLn, SDAn; EN = 4.5V
2.0
5.0
(Note 6)
EN = 3V
2.4
6.0
VI = 0;
EN = 2.3V
IO = 64mA EN = 1.5V
Ron
ON-state
resistance(Note 5)
SCLn, SDAn;
VI = 2.4V;
IO = 15mA
EN = 4.5V
EN = 3V
SCLn, SDAn;
3.1
8.0
11
32
4.6
7.5 â¦
50
80
VI = 1.7V;
IO = 15mA
EN = 2.3V
50
80
Note 4ï¼All typical values are at Tamb = 25°C.
Note 5ï¼Measured by the voltage drop between the SCL1 and SCL2, or SDA1 and SDA2
terminals at the indicated current through the switch.
ON-state resistance is determined by the lowest voltage of the two terminals.
Note 6ï¼Guaranteed by design.
________________________________________________________________________
http://www.union-ic.com Rev.03 Dec.2013
4/11
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