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Product Detailed Parameters
- Description：54AC109 - DUAL J-K FLIP-FLOP WIT
- Series：54AC
- Mfr：National Semiconductor
- Package：Bulk
- Function：Set(Preset) and Reset
- Type：JK Type
- Output Type：Complementary
- Number of Elements：2
- Number of Bits per Element：1
- Clock Frequency：95 MHz
- Max Propagation Delay @ V, Max CL：12ns @ 5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：24mA, 24mA
- Voltage - Supply：2V ~ 6V
- Current - Quiescent (Iq)：40 µA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-LCCC (8.89x8.89)
- Package / Case：20-CLCC
- Input Capacitance：4.5 pF
- Grade：-
- Qualification：-
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Overview
The JM54AC109B2A-RH is a dual J-K flip-flop logic integrated circuit manufactured by National Semiconductor. It operates within a supply voltage range of 3.0V to 5.5V and supports a maximum clock frequency of 95 MHz. The device features a propagation delay of 12 nanoseconds at a 5V supply with a 50 pF load. It is housed in a 20-lead Ceramic Leadless Chip Carrier (CLCC) package, specifically the B2A suffix configuration, designed for high-reliability digital applications requiring edge-triggered state storage.
Feature Summary
- Dual J-K flip-flop architecture providing independent edge-triggered data storage for two bits
- High-speed AC family performance supporting clock frequencies up to 95 MHz
- Robust ceramic packaging suitable for demanding environmental conditions
Applications
- Digital circuits requiring edge-triggered state storage
- Control logic systems utilizing J-K flip-flop functionality
- High-reliability military or aerospace digital processing units
Procurement Notes
Verify the specific B2A suffix indicates the correct 20-lead CLCC package variant. Confirm that the component meets required MIL-STD screening levels if applicable to the design. Ensure compatibility with existing 5V logic interfaces. Validate supplier authorization due to the specialized nature of this National Semiconductor part. Check for any obsolescence notices from Texas Instruments regarding this legacy product line.
Selection Notes
Select this component when dual J-K flip-flop functionality is required in a compact ceramic package. The AC family speed characteristics suit applications needing 95 MHz operation. Consider the 20-lead CLCC form factor for board space constraints. Verify power supply stability within the 3.0V to 5.5V range. Evaluate thermal requirements for the ceramic leadless chip carrier housing.
Part Context
This component belongs to the National Semiconductor AC family of logic devices, known for balanced speed and power consumption. The JM54 series typically denotes military-grade specifications. National Semiconductor's logic division was acquired by Texas Instruments, which now manages the product lifecycle. The AC family represents an advancement over earlier TTL standards with CMOS-like input characteristics.
Replacement Considerations
JM54AC109B2A is the base part number without the RH suffix. JM54AC109B2A-RH may have specific reliability certifications. Cross-reference with Texas Instruments documentation for current availability status.
