Fairchild Semiconductor's logic level translators support 2.5-to-3.3V conversions in cell phones, notebooks and other battery-powered handhelds. The FXL4T245BQX (4-bit bi-directional) and FXL5T244BQX (5-bit uni-directional) low-voltage logic-level translators come the DQFN package. The CMOS-based FXL series translators enable interconnection between a lower voltage microprocessor and higher voltage ASIC functions.
The FXL4T245BQX and FXL5T244BQX also provide space-efficient level translation between the 2.5-3.3 V I/Os and 3-, 4-, and 5-bit memory modules such those in Memory Sticks or Secure Digital (SD) cards, as well as the lower voltage I/Os utilized by many of the contemporary processor chip sets.
Both translators feature configurable voltage supplies (VCCA and VCCB) for the inputs and outputs allowing translation in either direction, between typical logic levels of 1.2V, 1.5V, 1.8V, 2.5V and 3.3V. Quiescent current consumption (ICC) is 20 μA max.
The DQFN leadless package measures 2.5 x 3.0 x 0.8 mm (h) and requires just 30% of the board area of a TSSOP. Furthermore, the DQFN package's MSL-1 (moisture sensitivity level) rating eliminates the need for costly dry bag storage prior to use on the production line.
Other product features of the FXL series include:
- Low noise buffered interface with up to 24mA drive;
- Non-preferential power-up sequencing: either VCC may be powered-up first;
- Outputs switch to 3-state if either VCC is at GND; Device remains in 3-state until both VCCs reach an active level;
- Power-off overvoltage (IOFF) protection of I/Os and control pins; and
- Minimum 4 kV HBM (Human Body Model) ESD protection; 8 kV HBM I/O-to-ground protection.
Other products from the South Portland, Maine-based Fairchild intended for portable applications include analog switches, Ultra Low Power (ULP) TinyLogic, DQFN-packaged low voltage logic, low voltage audio amplifiers, LED drivers and LEDs for backlighting, supervisory products such as temperature sensors and reset generator circuits, and a variety of DC/DC conversion products including LDOs and MOSFETs.
Price (ea, qty: 10,000 pcs): $0.35
Delivery: From stock
Editor's Note: For more information about these products, go to FXL4T245BQX
For more information on other Fairchild products, design tools and sales contacts, please visit Fairchild Semiconductor's Website