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Numéro de référence | UM3208 | ||
Description | 8-Bit Bidirectional Voltage-Level Translator | ||
Fabricant | Union Semiconductor | ||
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1 Page
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 (VCCA↔VCCB) 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(VCCA≤VCCB)
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)
M:Month Code
UM3208
CSP20
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http://www.union-ic.com Rev.01 Jan.2011
1/11
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Pages | Pages 11 | ||
Télécharger | [ UM3208 ] |
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