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UM3308_16 Datasheet, PDF (1/13 Pages) Union Semiconductor, Inc. – 8-Bit Bidirectional Voltage-Level Translator with Auto Direction Sensing and ±15kV ESD Protection | |||
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UM3308/UM3308H
8-Bit Bidirectional Voltage-Level Translator with
Auto Direction Sensing and ±15kV ESD Protection
UM3308 CSP20 2.7Ã2.4
UM3308H CSP20 2.4Ã1.9
General Description
UM3308/UM3308H is 8-channel bidirectional voltage level translator with auto direction sensing
and ±15kV ESD protection. This 8-channel non-inverting translator uses two separate
configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply
voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage
from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any
of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. Both I/O ports are auto-sensing; thus,
no direction pin is required, making it ideal for data transfer between low-voltage ASICs/PLDs
and higher voltage systems.
The UM3308/UM3308H operates at a guaranteed data rate of 20Mbps over the entire specified
operating voltage range. Within specific voltage domains, higher data rates are up to 100Mbps.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The
UM3308/UM3308H is designed so that the OE input circuit is supplied by VCCA.
To ensure the high-impedance state during power up or power down, OE should be tied to GND
through a pull down resistor; the minimum value of the resistor is determined by the
current-sourcing capability of the driver.
The UM3308 is 8-channel level translator available in CSP20 2.7Ã2.4 bump package while the
UM3308H is available in CSP20 2.4Ã1.9 bump package. The UM3308H includes wafer backside
coating process, making the chip more unbreakable.
Applications
Features
ï¬ Low-Voltage ASIC Level Translation
ï¬ Cell-Phone Cradles
ï¬ Portable POS Systems
ï¬ Portable Communication Devices
ï¬ Low-Cost Serial Interfaces
ï¬ Cell-Phones
ï¬ GPS
ï¬ Telecommunications Equipment
ï¬ 1.2V to 3.6V on A Port and 1.65V to 5.5V
on B Port (VCCAâ¤VCCB)
ï¬ VCC Isolation Feature â If Either VCC Input
is at GND, All Outputs are in the
High-Impedance State
ï¬ OE Input Circuit Referenced to VCCA
ï¬ Low Power Consumption
ï¬ Latch-Up Performance Exceeds 100mA
ï¬ Â±15kV ESD Protection on B Ports
Pin Configurations
Top View
(Bottom View)
XXX: Date Code
UM3308/UM3308H
CSP20 2.7Ã2.4/CSP20 2.4Ã1.9
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http://www.union-ic.com Rev.10 Mar.2016
1/13
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