1 Features
• CD4049UB Inverting
• CD4050B Noninverting
• High Sink Current for Driving 2 TTL Loads
• High-to-Low Level Logic Conversion
• 100% Tested for Quiescent Current at 20 V
• Maximum Input Current of 1 μA at 18 V Over Full
Package Temperature Range; 100 nA at 18 V and
25°C
• 5-V, 10-V, and 15-V Parametric Ratings

2 Applications
• CMOS to DTL or TTL Hex Converters
• CMOS Current Sink or Source Drivers
• CMOS High-to-Low Logic Level Converters

3 Description
The CD4049UB and CD4050B devices are inverting
and noninverting hex buffers, and feature logic-level
conversion using only one supply voltage (VCC). The
input-signal high level (VIH) can exceed the VCC
supply voltage when these devices are used for logiclevel
conversions. These devices are intended for use
as CMOS to DTL or TTL converters and can drive
directly two DTL or TTL loads. (VCC = 5 V,
VOL ≤ 0.4 V, and IOL ≥ 3.3 mA.)