40174

40174 Hex D-Type Flip-Flop with Clear Technical Summary

Overview

The 40174 is a high-reliability Hex D-Type Flip-Flop integrated circuit fabricated using complementary MOS (CMOS) technology. This device features six edge-triggered D-type flip-flops with common clock and master reset functionality. Designed for broad compatibility, it meets the stringent requirements of JEDEC Tentative Standard No. 13A for B-series CMOS devices. The 40174 operates across a wide voltage range and offers symmetrical output characteristics, making it suitable for both industrial and commercial applications where robust digital logic is required.

Key variants include the HCC40174B which extends the operating temperature range for more demanding environments. The CMOS construction provides excellent noise immunity and low power consumption, particularly in static conditions.

Features

• Standardized symmetrical output characteristics for consistent performance
• Exceptionally low quiescent current (specified at 20V for HCC devices)
• Wide operating voltage range with parametric ratings at 5V, 10V, and 15V
• Minimal input current (100nA at 18V and 25°C for HCC devices)
• 100% tested for quiescent current compliance
• Full compliance with JEDEC Tentative Standard No. 13A
• HCC40174B variant available for extended temperature operation
• High noise immunity typical of CMOS technology (0.45 VDD typ.)
• All inputs protected against electrostatic discharge (ESD)

Applications

The 40174 finds use in numerous digital systems requiring reliable data storage and transfer:

• Data registers and temporary storage in microprocessor systems
• Bus interfacing and signal buffering applications
• Control logic for industrial automation systems
• State machine implementation in digital controllers
• Waveform generation and timing circuits
• Input/output port expansion in embedded systems
• Data synchronization in communication interfaces
• Debouncing circuits for mechanical switch inputs

Electrical Characteristics

All values typical at 25°C unless otherwise specified:

DC Characteristics

• Supply Voltage Range (VDD): 3V to 18V
• Input Voltage Range (VIN): 0V to VDD
• Quiescent Current (IDD):
  • 5V: 0.5μA max (HCC at 25°C)
  • 10V: 2μA max (HCC at 25°C)
  • 15V: 4μA max (HCC at 25°C)
  • 20V: 8μA max (HCC at 25°C)
• Input Current (IIN): 100nA max at 18V (25°C)
• Output Drive Current (IO):
  • 1mA min at 5V
  • 2.25mA min at 10V
  • 3.6mA min at 15V

AC Characteristics

• Propagation Delay (CLK to Q):
  • 5V: 200ns typical
  • 10V: 90ns typical
  • 15V: 70ns typical
• Maximum Clock Frequency:
  • 5V: 3MHz typical
  • 10V: 8MHz typical
  • 15V: 12MHz typical
• Setup Time (D to CLK): 60ns at 10V
• Hold Time (D to CLK): 10ns at 10V

Power Requirements

• Power Dissipation per Package:
  • Static: 10μW typical at 5V
  • Dynamic: 0.5mW/MHz typical at 5V
• Power Supply Rejection Ratio: 80dB typical

Package Information

The 40174 is available in multiple industry-standard packages:

16-Pin Dual In-Line Package (DIP)

• Package Designator: DIP-16
• Body Dimensions: 19.3mm x 6.35mm
• Lead Pitch: 2.54mm (100 mil)
• Lead Count: 16
• Material: Molded Plastic
• Operating Temperature Range:
  • Standard: -40°C to +85°C
  • HCC Version: -55°C to +125°C

16-Pin Small Outline Package (SOIC)

• Package Designator: SO-16
• Body Dimensions: 9.9mm x 3.9mm
• Lead Pitch: 1.27mm (50 mil)
• Lead Count: 16
• Material: Molded Plastic
• Moisture Sensitivity Level (MSL): MSL 1

16-Pin Thin Shrink Small Outline Package (TSSOP)

• Package Designator: TSSOP-16
• Body Dimensions: 5mm x 4.4mm
• Lead Pitch: 0.65mm
• Lead Count: 16
• Material: Molded Plastic
• Moisture Sensitivity Level (MSL): MSL 1

Functional Description

The 40174 contains six independent D-type flip-flops with a common clock input and asynchronous master reset. Each flip-flop features a data (D) input and complementary outputs (Q and Q̅). On the positive-going transition of the clock pulse, the logic level present at the D input is transferred to the Q output. A high level on the master reset (MR) input clears all flip-flops independently of the clock state.

The device features edge-triggered operation, meaning data is only transferred on the clock transition rather than during the entire high or low clock period. This provides improved noise immunity compared to level-triggered devices. All inputs have Schmitt trigger action which provides hysteresis for improved noise rejection, typically 0.9V at VDD = 5V.

Recommended Operating Conditions

• Supply Voltage (VDD): 3V to 18V DC
• Input Voltage Range: 0V to VDD
• Operating Temperature Range:
  • Standard: -40°C to +85°C
  • HCC Version: -55°C to +125°C
• Clock Frequency: 0Hz to maximum specified for supply voltage
• Input Rise/Fall Time: 15μs max (VDD = 5V), 5μs max (VDD = 10V), 3μs max (VDD = 15V)

Handling and Storage

As with all CMOS devices, proper handling procedures should be followed:

• Use appropriate ESD protection when handling devices
• Store in anti-static packaging when not in use
• Avoid exposure to excessive moisture (follow MSL ratings)
• Do not exceed maximum ratings during operation or testing
• All unused inputs should be tied to VDD or ground