MCP48CMB04-20E/ST Equivalent & Substitute Parts

Part Overview

The MCP48CMB04-20E/ST is an 8-bit Digital to Analog Converter (DAC) manufactured by Microchip Technology, designed for data acquisition applications requiring voltage output conversion. This device integrates four independent DAC channels with buffered voltage outputs and operates across a wide supply voltage range of 1.8V to 5.5V. The part is currently in active production status with 1152 units available in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, design flexibility, or supply chain considerations.

Key Parameters

Parameter	Value
Number of Bits	8
Number of D/A Converters	4
Output Type	Voltage - Buffered
Data Interface	SPI
Settling Time (Typical)	16µs
Voltage - Supply, Analog	1.8V ~ 5.5V
Voltage - Supply, Digital	1.8V ~ 5.5V
INL/DNL (LSB)	±0.1, ±0.1
Architecture	R-2R
Operating Temperature Range	-40°C ~ 125°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

The MCP48CMB04-20E/ST and its identified substitute share identical electrical and mechanical specifications across all critical parameters. Substitution is valid based on the following matching criteria:

Electrical Parameters:

8-bit resolution with 4 independent DAC channels
Buffered voltage output configuration
SPI serial data interface
16µs typical settling time
±0.1 LSB INL and DNL specifications
R-2R resistor ladder architecture
Dual supply voltage range: 1.8V to 5.5V (both analog and digital)
External, internal, and supply reference type support

Mechanical Parameters:

20-TSSOP surface mount package with 0.173" width (4.40mm)
Identical pin configuration and footprint

Compliance Parameters:

ROHS3 compliance
MSL Level 3 (168 Hours)
REACH Unaffected status
EAR99 ECCN classification

Parameter Comparison

Parameter	MCP48CMB04-20E/ST	MCP48CVB04-20E/ST	Match Status
Manufacturer	Microchip Technology	Microchip Technology	Identical
Number of Bits	8	8	Identical
Number of D/A Converters	4	4	Identical
Output Type	Voltage - Buffered	Voltage - Buffered	Identical
Data Interface	SPI	SPI	Identical
Settling Time (Typical)	16µs	16µs	Identical
Voltage - Supply, Analog	1.8V ~ 5.5V	1.8V ~ 5.5V	Identical
Voltage - Supply, Digital	1.8V ~ 5.5V	1.8V ~ 5.5V	Identical
INL/DNL (LSB)	±0.1, ±0.1	±0.1, ±0.1	Identical
Architecture	R-2R	R-2R	Identical
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 125°C	Identical
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	Identical
Product Status	Active	Active	Identical
Current Inventory	1152 Pcs	849 Pcs	Different

Engineering Selection Recommendations

Both the MCP48CMB04-20E/ST and MCP48CVB04-20E/ST are functionally equivalent devices suitable for direct substitution in applications requiring 8-bit, 4-channel digital to analog conversion with buffered voltage outputs. Selection between these parts should be based on the following factors:

Product Status and Availability: Both parts maintain active production status with Microchip Technology. The MCP48CMB04-20E/ST currently has higher inventory availability (1152 units) compared to the MCP48CVB04-20E/ST (849 units).

Compliance and Regulatory Alignment: Both parts satisfy identical compliance requirements including ROHS3 certification, REACH Unaffected status, and EAR99 ECCN classification, making them suitable for equivalent use in regulated applications.

Electrical and Mechanical Compatibility: The parts are pin-for-pin compatible with identical package specifications (20-TSSOP), electrical performance characteristics, and operating parameters. No circuit modifications are required for substitution.

Supply Chain Considerations: Either part may be selected based on current procurement requirements and lead time availability from the supplier.

Frequently Asked Questions (FAQ)

Q: Are the MCP48CMB04-20E/ST and MCP48CVB04-20E/ST pin-for-pin compatible?

A: Yes. Both devices use the 20-TSSOP package with identical pin configurations and footprints. No PCB layout modifications are required for substitution.

Q: Can I substitute MCP48CVB04-20E/ST for MCP48CMB04-20E/ST in an existing design?

A: Yes. The devices are functionally equivalent across all electrical specifications, including resolution, settling time, supply voltage ranges, and output characteristics. Direct substitution is valid without circuit redesign.

Q: What is the difference between these two part numbers?

A: The electrical and mechanical specifications are identical. The difference in part numbers reflects internal Microchip Technology product line designations. Both parts are manufactured to the same performance standards.

Q: Are both parts RoHS compliant?

A: Yes. Both the MCP48CMB04-20E/ST and MCP48CVB04-20E/ST are ROHS3 compliant and suitable for applications requiring environmental compliance.

Q: What is the moisture sensitivity level for these devices?

A: Both parts have a Moisture Sensitivity Level (MSL) of 3, with a floor life of 168 hours. Standard moisture control procedures during storage and handling are required.

Q: Can these devices operate at 3.3V supply voltage?

A: Yes. Both devices support supply voltage operation from 1.8V to 5.5V, which includes standard 3.3V and 5V logic levels.

Q: What data interface protocol do these DACs use?

A: Both devices use the SPI (Serial Peripheral Interface) protocol for digital data communication.

Q: Are there any temperature range limitations for these devices?

A: Both parts operate across the industrial temperature range of -40°C to 125°C, suitable for standard and extended temperature applications.

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