UM3204
4-Bit Bidirectional Voltage-Level Translator for Open-Drain and
Push-Pull Application
UM3204H CSP12 1.9×1.4
UM3204Q QFN14 3.5×3.5
UM3204UE TSSOP14
General Description
The UM3204 is quad 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 UM3204 bidirectional level translator utilizes a transmission-gate based design to allow data
translation in either direction (VCCA↔VCCB) on any single data line. The UM3204 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 UM3204 enters a three-state output mode to reduce supply current when output enable (OE)
is low. The UM3204 is designed so that the OE input circuit is supplied by VCCA. ±5kV ESD
protection on the VCCB side for greater protection in applications that route signals externally. The
UM3204 is a quad level translator available in CSP12 1.9×1.4, QFN14 3.5×3.5 and TSSOP14
packages.
Applications
Features
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SPI, MICROWIRE, and I2C Level
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Max Data Rates:
Translation
24Mbps(Push Pull),
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Low-Voltage ASIC Level Translation
Smart Card Readers
Cell-phone Cradles
Portable POS Systems
Portable Communication Devices
Low-Cost Serial Interfaces
Cell-Phones
2Mbps(Open Drain)
Bidirectional Level Translation
1.65V to 3.6V on A port and 2.3V to
5.5V on B port(VCCA≤VCCB)
±5kV ESD Protection on B port
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No Power-Supply Sequencing Required
VCCA or VCCB Can Be Ramped First
GPS
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CSP12, QFN14 and TSSOP14 Packages
Telecommunications Equipment
Pin Configurations
Top View
(CSP12 Top View)
M: Month Code
UM3204H
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http://www.union-ic.com Rev.06 May.2012 1/13