UM3304/UM3304Q/UM3304QT
4-Bit Bidirectional Voltage-Level Translator with Auto Direction
sensing and ±4kV ESD Protection
UM3304
CSP12 1.9×1.4
UM3304Q
QFN14 3.5×3.5
UM3304QT
QFN16 2.6×1.8
General Description
UM3304/UM3304Q/UM3304QT is quad channel level translator with auto direction sensing and
±4kV ESD protection. This 4-channel non-inverting translator uses two separate configurable
power-supply rails. The A port is designed to track V
CCA
. V
CCA
accepts any supply voltage from
1.2V to 3.6V. The B port is designed to track V
CCB
. V
CCB
accepts any supply voltage from 1.65V
to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V,
1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. Both I/O ports are auto-sensing; thus, no direction
pin is required, making it ideal for data transfer between low-voltage ASICs /PLDs and higher
voltage systems.
The UM3304/UM3304Q/UM3304QT operates at a guaranteed data rate of 20Mbps over the entire
specified operating voltage range. Within specific voltage domains, higher data rates are up to
100Mbps.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The
UM3304/UM3304Q/UM3304QT is designed so that the OE input circuit is designed to track
V
CCA
.
To ensure the high-impedance state during power up or power down, OE should be tied to GND
through a pull down resistor; the minimum value of the resistor is determined by the
current-sourcing capability of the driver.
The UM3304 is a quad level translator available in 1.90mm×1.40mm CSP12 bump package while
the UM3304Q is packaged in a 3.50mm×3.50mm QFN14 package and the UM3304QT is
packaged in a 2.60mm ×1.80mm QFN16 package.
Applications
Low-Voltage ASIC Level Translation
Cell-phone Cradles
Portable POS Systems
Portable Communication Devices
Low-Cost Serial Interfaces
Cell-Phones
GPS
Telecommunications Equipment
Features
1.2V to 3.6V on A Port and 1.65V to 5.5V
on B Port (V
CCA
≤V
CCB
)
V
CC
Isolation Feature – If Either V
CC
Input is at GND, All Outputs are in the
High-Impedance State
OE Input Circuit Referenced to V
CCA
Low Power Consumption
Latch-Up Performance Exceeds 100mA
±4kV ESD Protection on B ports
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http://www.union-ic.com Rev.11 Sep.2013
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UM3304/UM3304Q/UM3304QT
Pin Configurations
(Top View)
Top View
A
B C D
3
2
1
UM3304
CSP12
1.9×1.4
(Top View)
XX: Week Code
UM3304Q
QFN14
3.5×3.5
(Top View)
XX: Week Code
UM3304QT
QFN16 2.60×1.80
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UM3304/UM3304Q/UM3304QT
Terminal Assignments for UM3304
3
A4
A3
A2
A1
2
GND
OE
V
CCA
V
CCB
1
B4
B3
B2
B1
D
C
B
A
Pin Description
UM3304
B2
A3
B3
C3
D3
-
D2
C2
-
D1
C1
B1
A1
A2
-
-
Pin
UM3304Q UM3304QT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
-
-
16
1
2
3
4
5
6
8
14
9
10
11
12
13
15
7
Name
V
CCA
A1
A2
A3
A4
NC
GND
OE
NC
B4
B3
B2
B1
V
CCB
NC
GND
Function
A-Port supply voltage. 1.2V≤V
CCA
≤3.6V
and V
CCA
≤V
CCB
Input/Output 1. Referenced to V
CCA
Input/Output 2. Referenced to V
CCA
Input/Output 3. Referenced to V
CCA
Input/Output 4. Referenced to V
CCA
Not connected. (Except for UM3304)
Ground
3-state output enable. Pull OE low to place
all outputs in 3-state mode. Referenced to
V
CCA
Not connected. (Except for UM3304)
Input/Output 4. Referenced to V
CCB
Input/Output 3. Referenced to V
CCB
Input/Output 2. Referenced to V
CCB
Input/Output 1. Referenced to V
CCB
B-Port supply voltage. 1.65V≤V
CCB
≤5.5V
Not connected. (Only for UM3304QT)
Ground. (Only for UM3304QT)
Ordering Information
Part Number
UM3304
UM3304Q
UM3304QT
Packaging Type
CSP12
1.9×1.4
QFN14 3.5×3.5
QFN16 2.6×1.8
Marking Code
YAAB
UM3304Q
3304
Shipping Qty
3000pcs/7Inch Tape & Reel
3000pcs/13Inch Tape & Reel
3000pcs/13Inch Tape & Reel
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UM3304/UM3304Q/UM3304QT
Absolute Maximum Ratings (Note 1)
Over operating free-air temperature range (unless otherwise noted)
Symbol
V
CCA
V
CCB
V
I
V
O
Parameter
Supply Voltage Range
Supply Voltage Range
Input Voltage Range
Voltage Range applied to any output
in the high-impedance or power-off
state
Voltage Range applied to any output
in the high or low state (Note 2)
Input Clamp Current
Output Clamp Current
Continuous Output Current
Continuous Current through V
CCA
, V
CCB
, or GND
T
OP
T
STG
Operating Temperature Range
Storage Temperature Range
A ports
B ports
A ports
B ports
A ports
B ports
V
I
＜0
V
O
＜0
Value
-0.5 to +4.5
-0.5 to +6.5
-0.5 to +4.5
-0.5 to +6.5
-0.5 to +4.5
V
-0.5 to +6.5
-0.5 to ( V
CCA
+0.5)
V
-0.5 to ( V
CCB
+0.5)
-50
-50
±50
±100
-40 to +85
-65 to +150
mA
mA
mA
mA
°C
°C
Unit
V
V
V
V
O
I
IK
I
OK
I
O
Note1. Stresses beyond those listed under "absolute maximum ratings" may cause permanent
damage to the device. These are stress ratings only, and functional operation of the device
at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended
periods may affect device reliability.
Note2. The value of V
CCA
and V
CCB
are provided in the recommended operating conditions table.
Recommended Operating Conditions (Note 1, 2)
Symbol
V
CCA
V
CCB
V
IH
V
IL
V
O
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
Voltage range applied to
any output in the
high-impedance or
power-off state
Input Transition
Rise or Fall Time
Data Inputs
OE
Data Inputs
OE
A-Port
B-Port
A-Port Inputs
B-Port Inputs
1.2V to 3.6V
1.2V to 3.6V
1.65V to 5.5V
1.65V to 3.6V
4.5V to 5.5V
1.2V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
V
CCA
V
CCB
Min
Max
Unit
V
V
V
V
V
V
V
1.2
3.6
1.65
5.5
V
CCI
×0.65
(Note3)
V
CCI
V
CCA
×0.65
5.5
0
V
CCI
×0.35
(Note3)
0
V
CCA
×0.35
0
0
3.6
5.5
40
40
30
Δt/Δv
ns/V
Note1. The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at V
CCI
or both
at GND.
Note2. V
CCA
must be less than or equal to V
CCB
and must not exceed 3.6 V.
Note3. V
CCI
is the supply voltage associated with the input port.
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UM3304/UM3304Q/UM3304QT
Electrical Characteristics
(Note 1, 2)
Over recommended operating free-air temperature range (unless otherwise noted)
Parameter
V
OHA
V
OLA
V
OHB
V
OLB
OE
A Port
B Port
A or B Port
I
CCA
Test Conditions
I
OH
=-20μA
I
OL
=20μA
I
OH
=-20μA
I
OL
=20μA
V
I
=V
CCI
or GND
V
I
or V
O
=0 to 3.6V
V
I
or V
O
=0 to 5.5V
OE=GND
V
I
=V
CCI
or GND
I
O
=0
V
CCA
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
0V to 5.5V
0V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
0V
5.5V
1.65V to 5.5V
1.65V to 5.5V
0V
5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
1.65V to 5.5V
V
CCB
T
A
=25℃
Typ
Max
1.1
0.9
0.4
V
CCB
-0.4
±1
±1
±1
±1
0.06
5
2
-2
3.4
5
-2
2
3.5
10
0.05
5
3.3
5
3
5
11
4
6
14
μA
μA
0.4
±2
±2
±2
±2
-40℃ to 85℃
Min
Max
V
CCA
-0.4
Unit
V
V
V
V
μA
μA
μA
I
I
I
off
I
OZ
I
CCB
V
I
=V
CCI
or GND
I
O
=0
V
I
=V
CCI
or GND
I
O
=0
V
I
=V
CCI
or GND
I
O
=0, OE=GND
V
I
=V
CCI
or GND
I
O
=0, OE=GND
I
CCA
+I
CCB
I
CCZA
I
CCZB
C
i
C
iO
OE
A Port
B Port
1.2V to 3.6V
0V
0V to 3.6V
1.2V to 3.6V
1.2V
1.4V to 3.6V
3.6V
0V
1.2V
1.4V to 3.6V
3.6V
0V
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.2V
1.4V to 3.6V
1.2V to 3.6V
1.2V to 3.6V
μA
μA
μA
pF
pF
Note1. V
CCI
is the supply voltage associated with the input port.
Note2. V
CCO
is the supply voltage associated with the output port.
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