SN74ALVCHR16245LR Equivalent & Substitute Parts

Part Overview

The SN74ALVCHR16245LR is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 2 elements with 8 bits per element and 3-state output capability. Designed for 48-SSOP surface mount packaging, this component operates across a supply voltage range of 1.65V to 3.6V and maintains active product status with full RoHS3 compliance.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from equivalent alternatives that maintain identical or compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	12mA, 12mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALVCHR16245LR is determined by strict alignment of the following parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 8
Output Type: 3-State
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Supply Voltage Range: Must encompass or match 1.65V ~ 3.6V
Output Current Capability: Minimum 12mA for both high and low states
Package compatibility: 48-pin SSOP or 48-pin TSSOP variants

Substitute parts are categorized as parametric equivalents when all electrical specifications align with the main part. Manufacturer-recommended alternatives may include variations in output current capacity, supply voltage range, or package form factor, provided the core functional parameters remain compatible.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Logic Type	Elements / Bits	Output Current (High, Low)	Supply Voltage	Package / Case	Product Status	Packaging Type
SN74ALVCHR16245LR	Texas Instruments	74ALVCHR	Transceiver, Non-Inverting	2 / 8	12mA, 12mA	1.65V ~ 3.6V	48-BSSOP (0.295", 7.50mm)	Active	Tape & Reel (TR)
SN74LVCHR16245ALR	Texas Instruments	74LVCHR	Transceiver, Non-Inverting	2 / 8	12mA, 12mA	1.65V ~ 3.6V	48-BSSOP (0.295", 7.50mm)	Active	Cut Tape (CT) & Digi-Reel®
SN74LVCR16245ADLR	Texas Instruments	74LVCR	Transceiver, Non-Inverting	2 / 8	12mA, 12mA	1.65V ~ 3.6V	48-BSSOP (0.295", 7.50mm)	Active	Tape & Reel (TR)
74ALVC162245PAG8	IDT, Integrated Device Technology Inc	74ALVC	Transceiver, Non-Inverting	2 / 8	12mA, 12mA / 24mA, 24mA	2.7V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Active	Bulk
74ALVC16245DGG,118	Nexperia USA Inc.	74ALVC	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	1.2V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Active	Tape & Reel (TR)
74ALVC16245MTDX	Fairchild Semiconductor	74ALVC	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	1.65V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Active	Bulk
74ALVC16245PAG	Renesas Electronics Corporation	74ALVC	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	2.7V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Obsolete	Tube
74ALVC16245PAG8	Renesas Electronics Corporation	74ALVC	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	2.7V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Obsolete	Cut Tape (CT)
74ALVCH16245DGG,11	Nexperia USA Inc.	74ALVCH	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	1.2V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Active	Tape & Reel (TR)
74ALVCH16245PAG	Renesas Electronics Corporation	74ALVCH	Transceiver, Non-Inverting	2 / 8	24mA, 24mA	2.7V ~ 3.6V	48-TFSOP (0.240", 6.10mm)	Obsolete	Tube

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution)

SN74LVCHR16245ALR and SN74LVCR16245ADLR maintain identical electrical and mechanical specifications to the SN74ALVCHR16245LR, including output current capacity, supply voltage range, and 48-BSSOP package form factor. Both parts carry Active product status and full RoHS3 compliance. These parts are suitable for direct substitution without design modification.

Manufacturer-Recommended Alternatives

Parts designated as manufacturer-recommended alternatives include 74ALVC16245DGG,118 and 74ALVCH16245DGG,11 from Nexperia, 74ALVC16245MTDX from Fairchild Semiconductor, and variants from IDT and Renesas. These alternatives feature enhanced output current capability (24mA versus 12mA) and utilize the 48-TFSOP package form factor, which differs in width (0.240" versus 0.295"). All maintain the required 2-element, 8-bit transceiver architecture with 3-state output and -40°C to 85°C operating temperature range.

Obsolete Part Considerations

74ALVC16245PAG, 74ALVC16245PAG8, and 74ALVCH16245PAG carry Obsolete product status. While electrically compatible, these parts should be selected only when existing inventory is available and long-term supply is not a design requirement.

Supply Voltage Compatibility

Parts with supply voltage range 1.2V ~ 3.6V (74ALVC16245DGG,118 and 74ALVCH16245DGG,11) provide extended low-voltage operation beyond the main part's 1.65V minimum. Parts with 2.7V ~ 3.6V range (IDT, Renesas variants) operate within a narrower window and are suitable only for applications that do not require operation below 2.7V.

Frequently Asked Questions (FAQ)

Q: Can I substitute SN74LVCHR16245ALR for SN74ALVCHR16245LR without design changes?

A: Yes. SN74LVCHR16245ALR is a parametric equivalent with identical electrical specifications (12mA output current, 1.65V ~ 3.6V supply voltage) and the same 48-BSSOP package. The only difference is packaging type (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts are Active status with RoHS3 compliance.

Q: What is the difference between 48-BSSOP and 48-TFSOP packages?

A: Both are 48-pin surface mount packages. The 48-BSSOP (0.295" width) is used by the main part and its direct parametric equivalents. The 48-TFSOP (0.240" width) is a narrower variant used by manufacturer-recommended alternatives. PCB layout and footprint design must accommodate the specific package width. Electrical functionality remains identical.

Q: Can I use 74ALVC16245DGG,118 as a substitute if my circuit operates at 1.5V?

A: Yes. 74ALVC16245DGG,118 supports supply voltage down to 1.2V, which encompasses 1.5V operation. The main part (SN74ALVCHR16245LR) specifies 1.65V minimum, so this alternative provides extended low-voltage capability. Output current is enhanced at 24mA versus 12mA.

Q: Why do some substitutes have higher output current (24mA) than the main part (12mA)?

A: Higher output current capability is a superset of the main part's specification. Parts with 24mA output current can drive heavier loads while remaining compatible with designs requiring only 12mA. This represents an enhancement rather than a limitation.

Q: Should I avoid Obsolete status parts?

A: Obsolete parts (74ALVC16245PAG, 74ALVC16245PAG8, 74ALVCH16245PAG) are electrically compatible but carry discontinued manufacturing status. Selection depends on application requirements. For new designs or long-term production, Active status parts are preferred. For existing inventory or short-term applications, Obsolete parts may be acceptable if stock is available.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts carry RoHS3 compliance status. Compliance certifications are identical across the main part and all alternatives, ensuring regulatory alignment for applications requiring RoHS3 certification.

Q: What packaging options are available for this transceiver?

A: The main part uses Tape & Reel (TR) packaging in 48-BSSOP form factor. Parametric equivalents offer Cut Tape (CT) & Digi-Reel® options. Manufacturer-recommended alternatives are available in Bulk, Tube, and Tape & Reel formats, all using the 48-TFSOP package. Selection depends on procurement volume and assembly requirements.

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