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Union Semiconductor

UM3208 Datasheet Preview

UM3208 Datasheet

8-Bit Bidirectional Voltage-Level Translator

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UM3208
8-Bit Bidirectional Voltage-Level Translator for Open-Drain and
Push-Pull Application
UM3208 CSP20
General Description
The UM3208 is ±15kV 8-channel ESD-protected level translator provide the level shifting
necessary to allow data transfer in a multi-voltage system. Externally applied voltages, VCCB and
VCCA, set the logic levels on either side of the device. A low-voltage logic signal present on the
VCCA side of the device appears as a high-voltage logic signal on the VCCB side of the device, and
vice-versa. The UM3208 bidirectional level translator utilizes a transmission-gate based design to
allow data translation in either direction (VCCAVCCB) on any single data line. The UM3208
accepts VCCA from +1.65V to +3.6V and VCCB from +2.3V to +5.5V, making it ideal for data
transfer between low-voltage ASICs / PLDs and higher voltage systems.
The UM3208 enters a three-state output mode to reduce supply current when output enable (OE)
is low. The UM3208 is designed so that the OE input circuit is supplied by VCCA. ±15kV ESD
protection on the VCCB side for greater protection in applications that route signals externally. The
UM3208 is a 8-channel level translator available in 3.0×2.5 CSP20 bump package.
Applications
Features
z SPI, MICROWIRE, and I2C Level z Max Data Rates:
Translation
24Mbps(Push Pull),
z Low-Voltage ASIC Level Translation
2Mbps(Open Drain)
z Smart Card Readers
z Bidirectional Level Translation
z Cell-phone Cradles
z 1.65V to 3.6V on A port and 2.3V to 5.5V
z Portable POS Systems
z Portable Communication Devices
on B port(VCCAVCCB)
z ±15kV ESD Protection on B port
z Low-Cost Serial Interfaces
z No Power-Supply Sequencing Required
z Cell-Phones
z GPS
z Telecommunications Equipment
VCCA or VCCB Can Be Ramped First
z CSP20 bump Package
Pin Configurations
(Bottom View)
(Top View)
MMonth Code
UM3208
CSP20
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2011
1/11




Union Semiconductor

UM3208 Datasheet Preview

UM3208 Datasheet

8-Bit Bidirectional Voltage-Level Translator

No Preview Available !

UM3208
Terminal Assignments
12345
D
VCCB
B2
B4
B6
B8
C B1 B3 B5 B7 GND
B A1 A3 A5 A7 OE
A
VCCA
A2
A4
A6
A8
Pin Description
Pin Name
A1
VCCA
A2
A3
A4
A5
A6
A7
A8
OE
GND
B8
B7
B6
B5
B4
B3
B2
VCCB
B1
Function
Input/Output 1. Referenced to VCCA
A-Port supply voltage. 1.65VVCCA3.6V and VCCAVCCB
Input/Output 2. Referenced to VCCA
Input/Output 3. Referenced to VCCA
Input/Output 4. Referenced to VCCA
Input/Output 5. Referenced to VCCA
Input/Output 6. Referenced to VCCA
Input/Output 7. Referenced to VCCA
Input/Output 8. Referenced to VCCA
3-state output enable. Pull OE low to place all outputs in 3-state mode.
Referenced to VCCA
Ground
Input/Output 8. Referenced to VCCB
Input/Output 7. Referenced to VCCB
Input/Output 6. Referenced to VCCB
Input/Output 5. Referenced to VCCB
Input/Output 4. Referenced to VCCB
Input/Output 3. Referenced to VCCB
Input/Output 2. Referenced to VCCB
B-Port supply voltage. 2.3VVCCB5.5V
Input/Output 1. Referenced to VCCB
Ordering Information
Part Number
UM3208
Packaging Type
CSP20
Marking Code
AAC
Shipping Qty
2500pcs/7Inch
Tape & Reel
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2011
2/11


Part Number UM3208
Description 8-Bit Bidirectional Voltage-Level Translator
Maker Union Semiconductor
Total Page 11 Pages
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