74LVCH244A

Description

The 74LVCH244A provides two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

The device is designed for operation with a power supply range of 1.65V to 3.6V.

The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using I_OFF. The I_OFF circuitry disables the output preventing damaging current backflow when the device is powered down.

Bus hold circuitry holds unused or un-driven inputs at a high or low logic state. The use of external pull-up or pull down resistors is not recommended.

Feature(s)

• Supply Voltage Range from 1.65V to 3.6V 
• Sinks or Sources 24mA at V_CC = 3V 
• CMOS Low Power Consumption 
• I_OFF Supports Partial-Power Down Operation 
• Inputs or Outputs Accept up to 5.5V 
• Inputs Can be Driven by 3.3V or 5V Allowing for Mixed Voltage Applications 
• Schmitt Trigger Action at All Inputs 
• Typical V_OLP (Quiet Output Ground Bounce) less than 0.8V with V_CC = 3.3V and T_A = +25°C 
• Typical V_OHV (Quiet Output Dynamic VOH) greater than 2.0V with V_CC = 3.3V and T_A = +25°C 
• ESD Protection Tested per JESD 22 
• Exceeds 200-V Machine Model (A115) 
• Exceeds 2000-V Human Body Model (A114) 
• Exceeds 1000-V Charged Device Model (C101) 
• Latch-Up Exceeds 250mA per JESD 78, Class I 
• Totally Lead-Free & Fully RoHS compliant 
• Halogen and Antimony Free. Green” Device 

Application(s)

• General Purpose Logic 
• Bus Driving 
• Power Down Signal Isolation 
• Wide array of products such as:
  • PCs, Notebooks, Netbooks, Ultrabooks 
  • Networking Computer Peripherals, Hard Drives, CD/DVD ROM 
  • TV, DVD, DVR, set top box