TL16CP554AIPM Equivalent & Substitute Parts

Part Overview

The TL16CP554AIPM is a quad UART interface IC manufactured by Texas Instruments, featuring 16-byte FIFO buffers and support for 4 independent serial channels. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a 3V to 5.25V supply range with a maximum data rate of 1Mbps and includes integrated modem control and false start bit detection capabilities.

Key Parameters

Parameter	Value
Number of Channels	4 (QUART)
FIFO Size	16 Byte
Data Rate (Max)	1Mbps
Voltage Supply Range	3V ~ 5.25V
Auto Flow Control	Yes
False Start Bit Detection	Yes
Modem Control	Yes
Package	64-LQFP (10x10)
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the TL16CP554AIPM is determined by strict alignment of core electrical and mechanical parameters. The critical substitution criteria are:

4-channel UART configuration with 16-byte FIFO per channel
64-LQFP package form factor (10x10mm)
Surface mount mounting type
Integrated modem control and false start bit detection
Auto flow control capability
ROHS3 compliance and MSL 3 rating

Substitute parts are grouped into two categories:

Manufacturer Recommended Substitutes (MaxLinear ST16C554 Series): ST16C554CQ64-F, ST16C554DCQ64-F, and ST16C554DIQ64-F meet all core electrical and mechanical parameters. These parts are active products with enhanced specifications including RS232 protocol support, internal oscillator, and timer/counter features. Maximum data rate is 1.5Mbps with expanded supply voltage range (2.97V ~ 5.5V).

Parametric Equivalent (Texas Instruments TL16CP554APM): This part maintains identical electrical specifications and package configuration as the main part, differing only in packaging designation. Both are obsolete Texas Instruments products with matching performance characteristics.

Parameter Comparison

Parameter	TL16CP554AIPM	ST16C554CQ64-F	ST16C554DCQ64-F	ST16C554DIQ64-F	TL16CP554APM
Manufacturer	Texas Instruments	MaxLinear, Inc.	MaxLinear, Inc.	MaxLinear, Inc.	Texas Instruments
Number of Channels	4 (QUART)	4 (QUART)	4 (QUART)	4 (QUART)	4 (QUART)
FIFO Size	16 Byte	16 Byte	16 Byte	16 Byte	16 Byte
Data Rate (Max)	1Mbps	1.5Mbps	1.5Mbps	1.5Mbps	1Mbps
Voltage Supply Range	3V ~ 5.25V	2.97V ~ 5.5V	2.97V ~ 5.5V	2.97V ~ 5.5V	3V ~ 5.25V
Auto Flow Control	Yes	Yes	Yes	Yes	Yes
False Start Bit Detection	Yes	Yes	Yes	Yes	Yes
Modem Control	Yes	Yes	Yes	Yes	Yes
Package	64-LQFP	64-LQFP	64-LQFP	64-LQFP	64-LQFP
Product Status	Obsolete	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

For new designs and ongoing system support, the MaxLinear ST16C554 series (ST16C554CQ64-F, ST16C554DCQ64-F, ST16C554DIQ64-F) are preferred substitutes. These parts are active products with full manufacturer support and enhanced performance specifications. All three variants maintain ROHS3 compliance and MSL 3 rating, ensuring compatibility with current manufacturing and environmental standards.

The TL16CP554APM serves as a parametric equivalent for applications requiring identical electrical performance and is suitable for legacy system maintenance where supply continuity is the primary concern.

All substitute parts maintain the 64-LQFP package configuration and core functional parameters required for direct replacement in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can ST16C554 series parts directly replace the TL16CP554AIPM in existing designs?

A: Yes. The ST16C554 series maintains identical package geometry (64-LQFP 10x10mm), channel configuration (4 QUART), FIFO size (16 Byte), and core control features (modem control, flow control, false start bit detection). Pin compatibility and functional equivalence are established across these parameters.

Q: What is the difference between ST16C554CQ64-F, ST16C554DCQ64-F, and ST16C554DIQ64-F?

A: All three variants are functionally equivalent with identical electrical specifications and package configuration. Differences exist in temperature rating and internal oscillator calibration, reflected in the part number designations. Selection should be based on application temperature requirements and available inventory.

Q: Are the MaxLinear ST16C554 parts suitable for new product development?

A: Yes. The ST16C554 series are active products with full manufacturer support, making them appropriate for new designs. They offer enhanced data rate capability (1.5Mbps vs. 1Mbps) and expanded supply voltage range compared to the obsolete TL16CP554AIPM.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts maintain ROHS3 compliance and MSL 3 (168 Hours) rating, matching the original TL16CP554AIPM specifications. REACH status is unaffected for all variants.

Q: Is the TL16CP554APM a suitable long-term substitute?

A: The TL16CP554APM is a parametric equivalent suitable for legacy system maintenance and repair. However, as an obsolete product, it is not recommended for new designs. The MaxLinear ST16C554 series are preferred for applications requiring long-term availability and manufacturer support.

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