UM3208 Datasheet, PDF (1/11 Pages) Union Semiconductor, Inc. – 8-Bit Bidirectional Voltage-Level Translator for Open-Drain and Push-Pull Application

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, 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 UM3208 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 UM3208
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 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 V_CCA. ±15kV ESD
protection on the V_CCB 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
z Low-Voltage ASIC Level Translation
z Smart Card Readers
z Cell-phone Cradles
z Portable POS Systems
z Portable Communication Devices
z Low-Cost Serial Interfaces
z Cell-Phones
z GPS
z Telecommunications Equipment
24Mbps(Push Pull),
2Mbps(Open Drain)
z Bidirectional Level Translation
z 1.65V to 3.6V on A port and 2.3V to 5.5V
on B port(V_CCA≤V_CCB)
z ±15kV ESD Protection on B port
z No Power-Supply Sequencing Required
V_CCA or V_CCB Can Be Ramped First
z CSP20 bump Package
Pin Configurations
(Bottom View)
(Top View)
M：Month Code
UM3208
CSP20
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http://www.union-ic.com Rev.01 Jan.2011
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