22V10

Technical Summary: LVT22V10 PAL Device

Overview

The LVT22V10 is a high-performance Programmable Array Logic (PAL) device manufactured using Philips' advanced BiCMOS QUBiC process. This process enables the device to operate at very high speeds (7.5ns typical propagation delay) while maintaining excellent noise immunity and power efficiency. Designed for 3V operation, the LVT22V10 is ideal for applications requiring fast signal processing and reliable performance in mixed-voltage systems.

Key advantages of this device include superior noise characteristics, with ground bounce typically below 0.7V when one output is held low while nine others switch from high to low. Similarly, VCC bounce remains below specified limits when outputs switch from low to high. These characteristics make the LVT22V10 particularly suitable for noise-sensitive applications.

Features

• High-Speed Operation: 7.5ns typical propagation delay, making it the fastest 3V PLD available
• Mixed-Voltage Support: Compatible with both 3V and 5V systems
• Excellent Noise Performance: Ground bounce typically less than 0.7V (1.1V worst case)
• Hot-Swap Capable: Supports live insertion and extraction
• Integrated Input Conditioning: Bus-hold data inputs eliminate need for external pull-up resistors
• Advanced Process Technology: Fabricated using Philips BiCMOS QUBiC process
• Low Power Consumption: Benefits from 3V operation and efficient BiCMOS design
• Robust Output Drive: Capable of driving typical bus loads

Applications

The LVT22V10's combination of speed, noise immunity, and voltage flexibility makes it suitable for a wide range of applications:

• High-Speed Logic Implementation: Ideal for implementing complex combinational and sequential logic functions
• Bus Interface Logic: Excellent for address decoding, bus control, and interface logic in microprocessor systems
• Mixed-Voltage Systems: Bridges between 3V and 5V components in transitional systems
• Noise-Sensitive Environments: Suitable for applications where signal integrity is critical
• Hot-Pluggable Systems: Can be used in systems requiring live board insertion/removal
• Portable Electronics: Low-voltage operation makes it suitable for battery-powered devices
• Industrial Control Systems: Robust enough for industrial environments with electrical noise

Electrical Characteristics

The LVT22V10 offers superior electrical performance characteristics:

Absolute Maximum Ratings

• Supply Voltage (VCC): -0.5V to +4.6V
• Input Voltage: -0.5V to VCC + 0.5V
• Output Voltage: -0.5V to VCC + 0.5V
• Storage Temperature: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VCC): 3.0V to 3.6V
• Operating Temperature: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
• Input Transition Time: 5ns maximum

DC Characteristics

• Input High Voltage (VIH): 2.0V minimum
• Input Low Voltage (VIL): 0.8V maximum
• Output High Voltage (VOH): 2.4V minimum (IOH = -4mA)
• Output Low Voltage (VOL): 0.4V maximum (IOL = 8mA)
• Input Clamp Voltage: -1.2V maximum (II = -18mA)
• Power Supply Current: 50mA maximum (all outputs switching)

AC Characteristics

• Propagation Delay (tPD): 7.5ns typical, 10ns maximum
• Output Enable Time (tEA): 7.5ns typical, 10ns maximum
• Output Disable Time (tER): 7.5ns typical, 10ns maximum
• Input Setup Time: 5.0ns maximum
• Input Hold Time: 0ns minimum
• Clock Frequency: 100MHz maximum

Package Information

The LVT22V10 is available in several industry-standard packages:

Plastic Leaded Chip Carrier (PLCC)

• 28-pin J-lead configuration
• Package dimensions: 11.43mm x 11.43mm body
• Lead pitch: 1.27mm
• Moisture Sensitivity Level (MSL): 3

Small Outline Integrated Circuit (SOIC)

• 28-lead narrow body
• Package dimensions: 17.9mm x 7.5mm body
• Lead pitch: 1.27mm
• Moisture Sensitivity Level (MSL): 3

Thin Shrink Small Outline Package (TSSOP)

• 28-pin variant available
• Package dimensions: 9.7mm x 4.4mm body
• Lead pitch: 0.65mm
• Moisture Sensitivity Level (MSL): 3

Design Considerations

When implementing the LVT22V10 in a system design, consider the following:

• Power Supply Decoupling: Use 0.1μF ceramic capacitors near each VCC pin
• Signal Integrity: Maintain controlled impedance for high-speed signals
• Thermal Management: Ensure adequate airflow in high-density designs
• Mixed-Voltage Interfaces: Verify level compatibility when interfacing with 5V devices
• Unused Inputs: The bus-hold feature eliminates need for pull-ups, but unused inputs should not be left floating

Conclusion

The LVT22V10 represents a high-performance solution for designers needing fast, reliable programmable logic in 3V or mixed-voltage systems. Its combination of speed, noise immunity, and flexible I/O characteristics make it particularly valuable in modern electronic systems where signal integrity and power efficiency are paramount. The device's ability to operate in live insertion scenarios further enhances its utility in serviceable systems.

When selecting this component, designers should carefully consider package options based on their assembly processes and board space constraints, while paying close attention to the recommended operating conditions to ensure optimal performance.