UM3204_14 Datasheet, PDF (1/15 Pages) Union Semiconductor, Inc. – 4-Bit Bidirectional Voltage-Level Translator for Open-Drain and Push-Pull Application

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, V_CCB and V_CCA, set
the logic levels on either side of the device. A low-voltage logic signal present on the V_CCA side of
the device appears as a high-voltage logic signal on the V_CCB 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 (V_CCA↔V_CCB) on any single data line. The UM3204 accepts V_CCA
from +1.65V to +3.6V and V_CCB 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 V_CCA. ±5kV ESD
protection on the V_CCB 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
 SPI, MICROWIRE, and I²C Level  Max Data Rates:
Translation
24Mbps(Push Pull),
 Low-Voltage ASIC Level Translation
2Mbps(Open Drain)
 Smart Card Readers
 Bidirectional Level Translation
 Cell-Phone Cradles
 1.65V to 3.6V on A Port and 2.3V to
 Portable POS Systems
 Portable Communication Devices
5.5V on B Port(V_CCA≤V_CCB)
 ±5kV ESD Protection on B Port
 Low-Cost Serial Interfaces
 No Power-Supply Sequencing Required
 Cell-Phones
 GPS
V_CCA or V_CCB Can Be Ramped First
 CSP12, QFN14 and TSSOP14 Packages
 Telecommunications Equipment
________________________________________________________________________
http://www.union-ic.com Rev.08 Dec.2014
1/15