Overview
The MC14504B is a hex non-inverting level shifter utilizing CMOS technology. It is designed to shift TTL (Transistor-Transistor Logic) signals to CMOS (Complementary Metal-Oxide-Semiconductor) logic levels. This level shifter can operate with CMOS supply voltages ranging from 5 to 15 volts. Additionally, it allows for interface between CMOS logic levels by selecting the power supply levels VDD and VCC, where VCC sets the input signal levels and VDD determines the output voltage levels.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| DC Supply Voltage Range (VCC) | VCC | -0.5 to +18.0 | V |
| DC Supply Voltage Range (VDD) | VDD | -0.5 to +18.0 | V |
| Input Voltage Range | Vin | -0.5 to +18.0 | V |
| Output Voltage Range | Vout | -0.5 to VDD + 0.5 | V |
| Input or Output Current per Pin | Iin, Iout | ±10 | mA |
| Power Dissipation per Package | PD | 500 | mW |
| Ambient Temperature Range | TA | -55 to +125 | °C |
| Storage Temperature Range | Tstg | -65 to +150 | °C |
| Lead Temperature (8-Second Soldering) | TL | 260 | °C |
| Propagation Delay, High to Low (TTL to CMOS) | tPHL | 140 to 280 ns | ns |
| Propagation Delay, Low to High (TTL to CMOS) | tPLH | 160 to 340 ns | ns |
| Output Rise and Fall Time | tTLH, tTHL | 40 to 100 ns | ns |
Key Features
- UP Translates from a Low to a High Voltage or DOWN Translates from a High to a Low Voltage
- Input Threshold Can Be Shifted for TTL Compatibility
- No Sequencing Required on Power Supplies or Inputs for Power Up or Power Down
- 3 to 18 Vdc Operation for VDD and VCC
- Diode Protected Inputs to VSS
- Capable of Driving Two Low-Power TTL Loads or One Low-Power Schottky TTL Load Over the Rated Temperature Range
- Pb-Free Packages are Available
Applications
The MC14504B is suitable for various applications where level translation between TTL and CMOS logic is necessary. This includes:
- Interface between TTL and CMOS circuits in mixed-signal designs
- Level shifting in multi-voltage systems
- Automotive and industrial control systems where different logic levels are used
- Embedded systems requiring compatibility between different logic families
Q & A
- What is the primary function of the MC14504B?
The MC14504B is a hex non-inverting level shifter designed to translate TTL signals to CMOS logic levels and vice versa.
- What is the operating voltage range for VCC and VDD?
The operating voltage range for both VCC and VDD is from -0.5 to +18.0 volts.
- What is the input voltage range for the MC14504B?
The input voltage range is from -0.5 to +18.0 volts.
- What is the maximum power dissipation per package?
The maximum power dissipation per package is 500 mW.
- What is the ambient temperature range for the MC14504B?
The ambient temperature range is from -55 to +125°C.
- Does the MC14504B require sequencing on power supplies or inputs?
No, the MC14504B does not require sequencing on power supplies or inputs for power up or power down.
- What is the propagation delay for TTL to CMOS translation?
The propagation delay for TTL to CMOS translation ranges from 140 to 280 ns for high to low and 160 to 340 ns for low to high.
- Can the MC14504B drive TTL loads?
Yes, the MC14504B is capable of driving two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range.
- Are Pb-Free packages available for the MC14504B?
Yes, Pb-Free packages are available for the MC14504B.
- What types of packages are available for the MC14504B?
The MC14504B is available in various packages including SOIC-16, TSSOP-16, PDIP-16, and SOEIAJ-16.
