The CD54HC4049F is a high-speed CMOS inverting hex buffer/converter fabricated with silicon gate CMOS technology. It achieves speeds comparable to similar LSTTL devices while retaining the low power consumption of CMOS. This device contains six independent inverters. Due to the diode protection on all inputs, this device allows the use of voltages higher than VCC.

Applications

• Logic Level Conversion
• TTL to CMOS or CMOS to CMOS Logic
• High Sink Current Driver Applications
• Relay Driving
• LED Driving

Features

• High Speed Operation: tpd = 9 ns (typ) at VCC = 5V
• Low Power Dissipation: ICC = 1 μA (max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 30% VCC
• Output Drive Capability: 10 LSTTL Loads
• Wide Operating Voltage Range: VCC = 2V to 6V
• Input Voltage Tolerant up to 7V
• Low Input Current: 1 μA (max)

Benefits

• Improved system performance due to higher speed.
• Reduced power consumption leading to longer battery life in portable applications.
• Increased noise immunity ensures reliable operation in noisy environments.
• Can drive a large number of standard logic devices.
• Versatile operation across a wide range of supply voltages.
• Protection against voltage spikes ensures device reliability.
• Minimal impact on system power budget.

Additional Details

The CD54HC4049F operates over the full military temperature range of -55°C to +125°C. It is available in a flatpack package. The device is pin-compatible with the CD4049UB and offers significant performance improvements. The inputs are diode-clamped to both VCC and ground, preventing damage from electrostatic discharge (ESD). It offers greater noise margin than standard TTL logic families. It's designed for applications where high speed and low power consumption are crucial.