SCAS758B DECember 2003 – June 2014 SN74LVC162244A
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Simplified Schematic
- 5 Revision History
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
- 9 Detailed Description
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
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10 Application and Implementation
10.1 Application Information
The SN74LVC162244A is a 16 bit buffer driver. This device can be used as four 4-bit, two 8-bit, or one 16-bit buffer. It allows data transmission from the A bus to the Y bus with 4 separate enable pins that control 4 bits each. The output-enable (OE) input can be used to disable sections of the device so the buses are effectively isolated. The device has 5.5 V tolerant inputs at any valid VCC which allows it to be used in multi-power systems and can be used for down translation.
10.2 Typical Application
Figure 4. Typical Application Schematic
10.2.1 Design Requirements
This device uses CMOS technology and has balanced output drive. Care should be taken to avoid bus contention because it can drive currents that would exceed maximum limits. The high drive will also create fast edges into light loads so routing and load conditions should be considered to prevent ringing.
10.2.2 Detailed Design Procedure
- Recommended Input Conditions
- Rise time and fall time specs: See (Δt/ΔV) in the Recommended Operating Conditions table.
- Specified high and low levels: See (VIH and VIL) in the Recommended Operating Conditions table.
- Inputs are overvoltage tolerant allowing them to go as high as 5.5 V at any valid VCC.
- Recommend Output Conditions
- Load currents should not exceed 25 mA per output and 50 mA total for the part.
- Outputs should not be pulled above VCC.
10.2.3 Application Curves
Figure 5. ICC vs Frequency