CALVC164245IZQLREP Equivalent & Substitute Parts

Part Overview

The CALVC164245IZQLREP is a voltage level translator IC manufactured by Texas Instruments, designed for bidirectional signal translation between different voltage domains. This 56-VFBGA package device features 2 circuits with 8 channels per circuit, supporting VCCA voltage range of 2.3V to 3.6V and VCCB voltage range of 3V to 5.5V. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production needs.

Substiute Parts

CALVC164245IZQLREP

Texas InstrumentsIn Stock: 940CALVC164245IZQLREP Datasheet

Current PartRFQ

74ALVC164245PAG

IDT, Integrated Device Technology IncIn Stock: 296574ALVC164245PAG Datasheet

MFR RecommendedRFQ

74ALVC164245PAG8

IDT, Integrated Device Technology IncIn Stock: 136574ALVC164245PAG8 Datasheet

MFR RecommendedRFQ

74AVC16T245DGG,118

NXP USA Inc.In Stock: 3696674AVC16T245DGG,118 Datasheet

MFR RecommendedRFQ

74VCX163245MTDX

onsemiIn Stock: 657274VCX163245MTDX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CALVC164245IZQLREP is determined by the following critical parameters:

• Translator Type: Voltage Level (bidirectional capability required)
• Channel Configuration: 2 circuits with 8 channels per circuit (16-bit total)
• Voltage Compatibility: VCCA range 2.3V ~ 3.6V and VCCB range 3V ~ 5.5V
• Output Type: Tri-State, Non-Inverted
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount

The substitute parts listed below maintain functional equivalence through matching translator type, channel configuration, and voltage specifications. Package differences (48-TSSOP vs. 56-VFBGA) represent the primary physical variation, with all substitutes offering the same electrical performance within the specified voltage and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The 74ALVC164245PAG and 74ALVC164245PAG8 from IDT represent the most direct functional equivalents. Both maintain the 74ALVC series designation, identical channel configuration (2 circuits, 8 channels per circuit), and tri-state non-inverted output characteristics. The VCCA voltage range difference (2.7V minimum vs. 2.3V minimum) is acceptable for applications operating above 2.7V. Both parts are currently active in production, ensuring long-term availability. The primary distinction between these two is packaging format: PAG uses Cut Tape packaging while PAG8 uses Bulk packaging.

Secondary Substitute (Extended Temperature Range):

The 74AVC16T245DGG,118 from NXP offers an extended operating temperature range (-40°C to 125°C) compared to the original specification (-40°C to 85°C). This part maintains the 2-element, 8-bit-per-element configuration and 3-state output type. The broader voltage supply range (0.8V to 3.6V) provides additional flexibility for multi-voltage applications. This part is currently active in production with substantial inventory availability.

Obsolete Alternative (Not Recommended for New Designs):

The 74VCX163245MTDX from onsemi is listed as obsolete and should not be selected for new production designs despite maintaining functional equivalence in channel configuration and output type. The dual voltage supply specification (1.65V ~ 2.7V and 2.3V ~ 3.6V) requires careful application verification.

Package Consideration:

All active substitutes use the 48-TFSOP package, which differs from the original 56-VFBGA package. PCB layout redesign is required for package migration. The 48-TFSOP package offers improved thermal characteristics and simplified assembly compared to BGA packages.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CALVC164245IZQLREP with 74ALVC164245PAG without PCB modifications?

A: No. The original part uses a 56-VFBGA package while the substitute uses a 48-TFSOP package. PCB layout redesign is required, including footprint changes, trace routing, and via placement adjustments.

Q: What is the voltage compatibility difference between the main part and IDT substitutes?

A: The CALVC164245IZQLREP supports VCCA down to 2.3V, while the 74ALVC164245PAG and 74ALVC164245PAG8 support VCCA down to 2.7V. For applications operating at 2.3V to 2.7V on the VCCA rail, the original part is required. For applications operating above 2.7V, the IDT substitutes are fully compatible.

Q: Why is the 74VCX163245MTDX listed as a substitute if it is obsolete?

A: The 74VCX163245MTDX is included for reference purposes as it maintains functional equivalence in channel configuration and output type. However, it is marked as obsolete and should not be selected for new production designs due to supply uncertainty and long-term availability concerns.

Q: Does the 74AVC16T245DGG,118 offer any advantages over the IDT alternatives?

A: The 74AVC16T245DGG,118 provides an extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C) and a broader voltage supply range (0.8V to 3.6V). These characteristics make it suitable for applications requiring higher temperature operation or greater voltage flexibility. However, for standard applications within the original temperature and voltage specifications, the IDT parts are preferred due to active product status and established supply chains.

Q: Are all substitute parts RoHS3 compliant?

A: The CALVC164245IZQLREP and 74VCX163245MTDX are confirmed ROHS3 compliant. RoHS compliance status for the IDT 74ALVC164245PAG and 74ALVC164245PAG8 parts is not specified in the provided data. Verification with the manufacturer is recommended for applications with strict RoHS compliance requirements.

Q: What is the difference between 74ALVC164245PAG and 74ALVC164245PAG8?

A: Both parts are electrically identical with the same channel configuration, voltage specifications, and operating temperature range. The primary difference is packaging format: 74ALVC164245PAG is supplied in Cut Tape (CT) packaging, while 74ALVC164245PAG8 is supplied in Bulk packaging. Selection depends on procurement and assembly requirements.