LT1253CS8#PBF Equivalent & Substitute Parts

Part Overview

The LT1253CS8#PBF is a current feedback video amplifier manufactured by Analog Devices Inc., designed for high-speed signal processing applications. This dual-channel linear amplifier operates with a -3dB bandwidth of 270 MHz and a slew rate of 250V/µs, making it suitable for demanding video and RF applications. The device is currently active in production and available in 8-SOIC surface mount packaging.

Substitute parts are necessary when the LT1253CS8#PBF becomes unavailable due to supply constraints, end-of-life status, or when alternative sourcing is required for cost optimization or supply chain diversification. The substitute parts listed below provide functional equivalence within defined electrical and mechanical parameters.

Key Parameters

Parameter	LT1253CS8#PBF	Unit
Manufacturer	Analog Devices Inc.	—
Category	Linear, Amplifiers	—
Number of Circuits	2	—
-3dB Bandwidth	270	MHz
Slew Rate	250	V/µs
Current - Supply	6	mA
Current - Output / Channel	55	mA
Voltage - Supply (Single/Dual)	4V ~ 28V, ±2V ~ 14V	V
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Product Status	Active	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LT1253CS8#PBF is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Pin count and footprint equivalence

Electrical Compatibility:

Number of circuits: 2 channels
Supply voltage range: Must accommodate 4V ~ 28V or ±2V ~ 14V operation
Output current capability: Minimum 40 mA per channel (substitute parts provide 30-40 mA)
Slew rate: Substitute parts operate at 0.3V/µs, significantly lower than the original 250V/µs
Bandwidth characteristics: Substitute parts provide 700 kHz gain bandwidth product, substantially lower than the original 270 MHz -3dB bandwidth

Compliance & Certification:

RoHS3 compliance required
MSL rating: 1 (Unlimited)
REACH unaffected status

The substitute parts listed are general-purpose operational amplifiers based on the LM2904 platform. These devices share identical mechanical packaging and basic electrical architecture but operate at reduced bandwidth and slew rate specifications. Substitution is valid only for applications where the lower performance characteristics are acceptable.

Parameter Comparison

Parameter	LT1253CS8#PBF	LM2904AVQDR	LM2904AVQDRG4	LM2904DR	LM2904DRG3	LM2904DRG4	LM2904M/NOPB	LM2904MX/NOPB	LM2904QDR	LM2904QDRG4	LM2904QDRG4Q1	Unit
Manufacturer	Analog Devices	Texas Instruments	Texas Instruments	Rohm Semiconductor	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	—
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2	—
Slew Rate	250	0.3	0.3	0.3	0.3	0.3	—	—	0.3	0.3	0.3	V/µs
Gain Bandwidth Product	—	700	700	700	700	700	1	1	700	700	700	kHz
Current - Input Bias	—	20	20	20	20	20	45	45	20	20	20	nA
Voltage - Input Offset	—	1	1	3	3	3	2	2	3	3	3	mV
Current - Supply	6	500µA (x2)	500µA (x2)	1	500µA (x2)	500µA (x2)	1	1	500µA (x2)	500µA (x2)	500µA (x2)	mA
Current - Output / Channel	55	40	40	40	40	40	40	40	40	40	30	mA
Voltage - Supply Span (Min)	4 (±2)	3	3	3	3	3	3	3	3	3	3	V
Voltage - Supply Span (Max)	28 (±14)	30	30	26	26	26	32	32	26	26	26	V
Operating Temperature	—	-40 ~ 125	-40 ~ 125	-40 ~ 125	-40 ~ 125	-40 ~ 125	-40 ~ 85	-40 ~ 85	-40 ~ 125	-40 ~ 125	-40 ~ 125	°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	—
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	Discontinued at DiGi Electronics	Not For New Designs	Last Time Buy	Obsolete	Active	Active	Active	Last Time Buy	Active	—

Engineering Selection Recommendations

Primary Substitutes (Active Status):

LM2904AVQDR, LM2904M/NOPB, LM2904MX/NOPB, and LM2904QDR are the recommended substitutes, as all maintain Active product status. These parts provide identical mechanical compatibility and share the same 8-SOIC package footprint as the LT1253CS8#PBF.

LM2904QDRG4Q1 is an automotive-grade variant (AEC-Q100 qualified) with Active status, suitable for applications requiring automotive qualification. This part operates at reduced output current (30 mA per channel versus 55 mA in the original).

Secondary Substitutes (Limited Availability):

LM2904AVQDRG4, LM2904DRG3, LM2904DRG4, and LM2904QDRG4 are available but carry restricted product status (Discontinued at DiGi Electronics, Last Time Buy, or Obsolete). These parts should be selected only when primary substitutes are unavailable and supply chain continuity is assured.

LM2904DR (Rohm Semiconductor) carries "Not For New Designs" status and should not be selected for new product development.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing and storage requirements. All parts are REACH unaffected.

Critical Performance Limitation:

All substitute parts operate at significantly reduced bandwidth (700 kHz gain bandwidth product) and slew rate (0.3V/µs) compared to the LT1253CS8#PBF (270 MHz -3dB bandwidth, 250V/µs slew rate). These substitutes are general-purpose operational amplifiers and are not suitable for high-speed video or RF applications requiring the original part's performance characteristics. Substitution is valid only for low-frequency signal processing applications where bandwidth and slew rate requirements are substantially lower.

Frequently Asked Questions (FAQ)

Q: Can the LM2904 series directly replace the LT1253CS8#PBF in all applications?

A: No. While the LM2904 series shares identical 8-SOIC packaging and dual-channel architecture, it operates at significantly lower bandwidth (700 kHz versus 270 MHz) and slew rate (0.3V/µs versus 250V/µs). Substitution is valid only for applications where these reduced performance specifications are acceptable. High-speed video and RF applications require the original LT1253CS8#PBF performance characteristics.

Q: What is the difference between the various LM2904 part numbers?

A: LM2904 variants differ primarily in product status, packaging format (Cut Tape, Tube, Tape & Reel), and temperature rating. LM2904AVQDR and LM2904MX/NOPB are Active status parts with wide availability. LM2904QDRG4Q1 is automotive-qualified (AEC-Q100). Parts designated DRG3, DRG4, and AVQDRG4 carry restricted status (Last Time Buy, Obsolete, or Discontinued). All share identical electrical specifications within their respective temperature and performance grades.

Q: Is the LM2904QDRG4Q1 suitable for automotive applications?

A: Yes. The LM2904QDRG4Q1 carries AEC-Q100 qualification and Automotive grade designation, making it suitable for automotive applications. However, note that output current is reduced to 30 mA per channel compared to 40 mA in standard LM2904 variants and 55 mA in the original LT1253CS8#PBF.

Q: What are the supply voltage compatibility considerations?

A: The LT1253CS8#PBF operates at 4V ~ 28V (single supply) or ±2V ~ 14V (dual supply). Most LM2904 substitutes operate at 3V ~ 26V or 3V ~ 30V. Verify that the substitute part's supply voltage range encompasses your application's requirements. LM2904M/NOPB and LM2904MX/NOPB support up to 32V maximum supply voltage.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing processes and storage requirements.

Q: Which substitute should I select for new product designs?

A: For new designs, select from Active status parts only: LM2904AVQDR, LM2904M/NOPB, LM2904MX/NOPB, LM2904QDR, or LM2904QDRG4Q1 (if automotive qualification is required). Avoid parts with Last Time Buy, Discontinued, Obsolete, or Not For New Designs status.

Q: What is the output current difference between the LT1253CS8#PBF and LM2904 substitutes?

A: The LT1253CS8#PBF provides 55 mA output current per channel. Standard LM2904 variants provide 40 mA per channel. The automotive-qualified LM2904QDRG4Q1 provides 30 mA per channel. Verify that your application's output current requirements do not exceed the substitute part's capability.

Q: Can I use LM2904DR (Rohm Semiconductor) in new designs?

A: No. LM2904DR carries "Not For New Designs" status. This part should be used only for legacy product maintenance or when no other alternatives are available. For new designs, select from Texas Instruments or Analog Devices Active status parts.

Q: What is the temperature operating range for each substitute?

A: Most LM2904 variants operate from -40°C to 125°C. LM2904M/NOPB and LM2904MX/NOPB operate from -40°C to 85°C. Verify that the substitute part's temperature range meets your application requirements, particularly for industrial or automotive environments.

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