SN74AVC16374ZQLR Equivalent & Substitute Parts

Part Overview

The SN74AVC16374ZQLR is a dual 8-bit D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 56-VFBGA package. This device functions as a standard positive-edge-triggered flip-flop with tri-state, non-inverted outputs, designed for high-speed digital logic applications requiring 200 MHz operation.

The SN74AVC16374ZQLR is classified as obsolete. Finding equivalent substitute parts is necessary due to limited availability of the original 56-VFBGA package variant. Substitute parts maintain identical electrical functionality while offering alternative packaging options with improved market availability and active product status.

Key Parameters

Parameter	Value
Base Product Number	74AVC16374
Function	Standard D-Type Flip-Flop
Number of Elements	2
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Clock Frequency	200 MHz
Max Propagation Delay	3.3 ns @ 3.3V, 30pF
Trigger Type	Positive Edge
Voltage Supply Range	1.4V ~ 3.6V
Current Output (High/Low)	12mA / 12mA
Quiescent Current	40 µA
Input Capacitance	3 pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74AVC16374ZQLR is determined by strict equivalence of the following electrical and functional parameters:

Base product number: 74AVC16374
Logic function: Dual 8-bit D-type flip-flop
Output configuration: Tri-state, non-inverted
Clock frequency: 200 MHz
Propagation delay: 3.3 ns @ 3.3V, 30pF
Supply voltage range: 1.4V ~ 3.6V
Output current capability: 12mA / 12mA
Trigger type: Positive edge
Operating temperature range: -40°C ~ 85°C
RoHS and REACH compliance status

The primary difference between the main part and substitute lies in packaging format. The SN74AVC16374DGGR provides identical electrical performance in an alternative 48-TFSOP surface-mount package, enabling direct functional substitution with different PCB layout requirements.

Parameter Comparison

Parameter	SN74AVC16374ZQLR (Main)	SN74AVC16374DGGR (Substitute)
Manufacturer	Texas Instruments	Texas Instruments
Base Product Number	74AVC16374	74AVC16374
Package / Case	56-VFBGA	48-TFSOP (0.240", 6.10mm Width)
Supplier Device Package	56-BGA Microstar Junior (7x4.5)	48-TSSOP
Packaging Format	Tube	Tape & Reel (TR)
Product Status	Obsolete	Active
Function	Standard D-Type Flip-Flop	Standard D-Type Flip-Flop
Number of Elements	2	2
Number of Bits per Element	8	8
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Clock Frequency	200 MHz	200 MHz
Max Propagation Delay @ V, Max CL	3.3 ns @ 3.3V, 30pF	3.3 ns @ 3.3V, 30pF
Trigger Type	Positive Edge	Positive Edge
Current - Output High, Low	12mA, 12mA	12mA, 12mA
Voltage - Supply	1.4V ~ 3.6V	1.4V ~ 3.6V
Current - Quiescent (Iq)	40 µA	40 µA
Input Capacitance	3 pF	3 pF
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

The SN74AVC16374DGGR is the recommended substitute for the obsolete SN74AVC16374ZQLR. Both parts share identical electrical specifications, functional performance, and regulatory compliance certifications (ROHS3, REACH Unaffected, EAR99).

The SN74AVC16374DGGR maintains active product status with significantly higher inventory availability (3810 pcs vs. 943 pcs). The transition from 56-VFBGA to 48-TFSOP packaging requires PCB layout modification but presents no electrical incompatibility. Both packages are surface-mount configurations with equivalent signal integrity characteristics for the specified operating parameters.

Selection of the SN74AVC16374DGGR is appropriate for new designs and production continuity where the 48-TFSOP footprint can be accommodated. Compliance certifications remain unchanged, and supply chain risk is substantially reduced through active product status.

Frequently Asked Questions (FAQ)

Q: Are the SN74AVC16374ZQLR and SN74AVC16374DGGR electrically identical?

A: Yes. Both parts share the same base product number (74AVC16374) and maintain identical electrical specifications including clock frequency (200 MHz), propagation delay (3.3 ns @ 3.3V, 30pF), output current (12mA/12mA), supply voltage range (1.4V ~ 3.6V), and operating temperature range (-40°C ~ 85°C).

Q: What is the primary difference between these parts?

A: The primary difference is packaging format. The SN74AVC16374ZQLR uses a 56-VFBGA package (56-pin Ball Grid Array), while the SN74AVC16374DGGR uses a 48-TFSOP package (48-pin Thin Shrink Small Outline Package). Both are surface-mount configurations.

Q: Can I use the SN74AVC16374DGGR as a direct replacement on existing PCBs designed for the SN74AVC16374ZQLR?

A: No. The different package formats (56-VFBGA vs. 48-TFSOP) require different PCB footprints and pin layouts. PCB redesign is necessary to accommodate the 48-TFSOP package.

Q: Why is the SN74AVC16374ZQLR listed as obsolete?

A: The SN74AVC16374ZQLR is classified as obsolete by the manufacturer. The SN74AVC16374DGGR remains in active production, making it the preferred choice for ongoing component sourcing.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74AVC16374ZQLR and SN74AVC16374DGGR are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level).

Q: What is the pin count difference between the two packages?

A: The SN74AVC16374ZQLR (56-VFBGA) has 56 pins, while the SN74AVC16374DGGR (48-TFSOP) has 48 pins. Pin assignments differ between packages and require schematic and layout verification during substitution.

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