FLXA104 — Low-Voltage Dual-Supply 4-Bit Voltage Translator
March 2009
FXLA104 Low-Voltage Dual-Supply 4-Bit Voltage Translator with Configurable Voltage Supplies and Signal Levels, 3-State Outputs, and Auto Direction Sensing
Features
Bi-Directional Interface between Two Levels: from 1.1V to 3.6V Fully Configurable: Inputs and Outputs Track VCC Non-Preferential Power-Up; Either VCC May Be Powered Up First Outputs Remain in 3-State Until Active VCC Level is Reached Outputs Switch to 3-State if Either VCC is at GND Power-Off Protection Bus-Hold on Data Inputs Eliminates the Need for Pull-Up Resistors Control Input (/OE) Referenced to VCCA Voltage Packaged in 16-Terminal µMLP (1.8mm x 2.6mm) Direction Control Not Necessary 100Mbps Throughput when Translating Between 1.8V and 2.5V ESD Protection Exceeds: - 8kV HBM (per JESD22-A114 & Mil Std 883e 3015.7) - 2kV CDM (per ESD STM 5.3)
Description
The FXLA104 is a configurable dual-voltage supply translator for both uni-directional and bi-directional voltage translation between two logic levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A port tracks the VCCA level and the B port tracks the VCCB level. This allows for bi-directional voltage translation over a variety of voltage levels: 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device remains in three-state until both VCCs reach active levels, allowing either VCC to be powered up first. Internal power-down control circuits place the device in 3-state if either VCC is removed. The /OE input, when HIGH, disables both the A and B ports by placing them in a 3-state condition. The /OE input is supplied by VCCA. The FXLA104 supports bi-directional translation without the need for a direction control pin. The two ports of the device have auto-direction sense capability. Either port may sense an input signal and transfer it as an output signal to the other port.
Applications
Cell Phone, PDA, Digital Camera, Portable GPS
Ordering Information
Part Number
FXLA104UMX
Operating Temperature Range
-40 to 85°C
Eco Status
Green
Package
16-Terminal µMLP 1.8 x2.6mm Package
Packing Method
Tape and Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation FXLA104 • Rev. 1.0.0
www.fairchildsemi.com
FLXA104 — Low-Voltage Dual-Supply 4-Bit Voltage Translator
Pin Configuration
B0
12
B1
11
B2
10
B3
9 8 7 6
VCCB NC NC VCCA
13 14 15
/OE GND GND NC
16
5
1
2
3
4
A0
A1
A2
A3
Figure 1. Pin Configuration (Top Through View)
Pin Definitions
Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Name
A0 A1 A2 A3 NC GND GND /OE B3 B2 B1 B0 VCCB NC NC VCCA
Description
A-Side Inputs or 3-State Outputs A-Side Inputs or 3-State Outputs A-Side Inputs or 3-State Outputs A-Side Inputs or 3-State Outputs No Connect Ground Ground Output Enable Input B-Side Inputs or 3-State Outputs B-Side Inputs or 3-State Outputs B-Side Inputs or 3-State Outputs B-Side Inputs or 3-State Outputs B-Side Power Supply No Connect No Connect A-Side Power Supply
© 2009 Fairchild Semiconductor Corporation FLXA104 • Rev. 1.0.0
www.fairchildsemi.com 2
FLXA104 — Low-Voltage Dual-Supply 4-Bit Voltage Translator
Functional Diagram
Figure 2. Functional Diagram
Function Table
Control
/OE LOW Logic Level HIGH Logic Level Normal Operation 3-State
Outputs
© 2009 Fairchild Semiconductor Corporation FLXA104 • Rev. 1.0.0
www.fairchildsemi.com 3
FLXA104 — Low-Voltage Dual-Supply 4-Bit Voltage Translator
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.
Symbol
VCC VI
Parameter
Supply Voltage DC Input Voltage VCCA VCCB
Conditions
Min.
-0.5 -0.5 -0.5 -0.5 -0.5 -0.5 -0.5
Max.
4.6 4.6 4.6 4.6 4.6 VCCA +0.5 VCCB +0.5 -50 -50 +50
Unit
V V
I/O Ports A and B Control Input (/OE) Output 3-State Output Active (An) Output Active (Bn) VI
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