TSH112ID Equivalent & Substitute Parts

Part Overview

The TSH112ID is a current feedback amplifier manufactured by STMicroelectronics, featuring two circuits in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The TSH112ID operates across a supply voltage range of 5V to 12V with a slew rate of 450V/µs and -3dB bandwidth of 100 MHz, making it suitable for applications requiring moderate-speed signal amplification in automotive-grade environments.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Current Feedback	—
Number of Circuits	2	—
Slew Rate	450	V/µs
-3dB Bandwidth	100	MHz
Current - Input Bias	3	µA
Voltage - Input Offset	900	µV
Current - Supply	3.2	mA
Current - Output / Channel	47	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	12	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q100	—

Substitute Part Grouping Explanation

Substitution of the TSH112ID is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: Current Feedback (mandatory)
Number of Circuits: 2 (mandatory)
Package / Case: 8-SOIC (0.154", 3.90mm Width) (mandatory)
Mounting Type: Surface Mount (mandatory)
Operating Temperature Range: -40°C to 85°C (mandatory)
Voltage Supply Span: 5V to 12V minimum compatibility (mandatory)

Secondary Compatibility Parameters:

Slew Rate: 450V/µs or greater
-3dB Bandwidth: 100 MHz or greater
Current - Output / Channel: 47 mA or greater
Current - Supply: 3.2 mA or less (preferred for power efficiency)

Substitute parts are grouped into three categories based on their electrical performance relative to the TSH112ID:

Category A - Direct Equivalents: Parts meeting all primary criteria with slew rate and bandwidth equal to or slightly exceeding the TSH112ID specifications.

Category B - Enhanced Performance Substitutes: Parts meeting all primary criteria with significantly higher slew rate and bandwidth, suitable for applications requiring improved frequency response.

Category C - Compatible Alternatives: Parts meeting all primary criteria with comparable or slightly reduced performance characteristics, suitable for non-critical applications.

Parameter Comparison

Parameter	TSH112ID	AD8008ARZ-REEL7	AD8072JRZ	AD8072JRZ-REEL7	EL5263ISZ	EL5263ISZ-T7	HA5023IBZ	LMH6724MAX/NOPB	LT1253CS8	LT1253CS8#PBF	LT1253CS8#TRPBF
Manufacturer	STMicroelectronics	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Renesas Electronics	Renesas Electronics	Renesas Electronics	National Semiconductor	Linear Technology	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback	Current Feedback
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	450	1000	500	500	4000	4000	350	600	250	250	250
-3dB Bandwidth (MHz)	100	500	100	100	500	500	125	370	270	270	270
Current - Input Bias (µA)	3	4	—	—	2	2	—	2	—	—	—
Voltage - Input Offset (µV)	900	500	—	—	1500	1500	—	1000	—	—	—
Current - Supply (mA)	3.2	9 (x2)	3.5	3.5	1.5 (x2)	1.5 (x2)	7.5	1 (x2)	6	6	6
Current - Output / Channel (mA)	47	130	30	30	100	100	20	110	55	55	55
Voltage - Supply Span (Min) (V)	5	5	5 / ±2.5	5 / ±2.5	5	5	±4.75	4.5	4	4	4
Voltage - Supply Span (Max) (V)	12	12	12 / ±6	12 / ±6	12	12	±18	12	28	28	28
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	—	-40 to 85	—	—	—
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Last Time Buy	Last Time Buy	Obsolete	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Automotive Applications with AEC-Q100 Requirement:

The TSH112ID carries automotive-grade qualification (AEC-Q100) and operates across -40°C to 85°C. Among the substitute options, AD8008ARZ-REEL7, AD8072JRZ, AD8072JRZ-REEL7, and LMH6724MAX/NOPB maintain the same operating temperature range and are suitable for automotive environments. These parts are ROHS3 compliant, addressing environmental and regulatory requirements that the original TSH112ID does not meet.

For Direct Performance Matching:

AD8072JRZ and AD8072JRZ-REEL7 provide the closest electrical performance match to the TSH112ID, with identical -3dB bandwidth (100 MHz) and comparable slew rate (500V/µs versus 450V/µs). These parts are available in both tube and tape & reel packaging formats. However, both are designated as Last Time Buy, indicating limited future availability.

For Enhanced Performance with Active Status:

AD8008ARZ-REEL7 and LMH6724MAX/NOPB offer significantly improved performance specifications (1000V/µs and 600V/µs slew rates respectively, with 500 MHz and 370 MHz bandwidth) while maintaining active product status. These parts are suitable for applications requiring higher frequency response and faster signal transitions. AD8008ARZ-REEL7 is available in tape & reel packaging, while LMH6724MAX/NOPB is supplied in bulk packaging.

For Extended Supply Voltage Range:

LT1253CS8, LT1253CS8#PBF, and LT1253CS8#TRPBF support supply voltages from 4V to 28V (single supply) or ±2V to ±14V (dual supply), providing greater flexibility for multi-voltage system designs. These parts are active and ROHS3 compliant, with -3dB bandwidth of 270 MHz.

For Low Power Supply Current:

EL5263ISZ and EL5263ISZ-T7 feature the lowest supply current consumption (1.5 mA per channel) among all substitutes, making them suitable for power-constrained applications. However, both are obsolete products with higher input offset voltage (1.5 mV) and significantly higher slew rate (4000V/µs).

For Immediate Availability:

LT1253CS8#TRPBF has the highest inventory level (4300 pcs) among active products, followed by LT1253CS8 (4820 pcs). Both are suitable for high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TSH112ID with any of the listed substitutes?

A: Direct replacement is possible only with parts that maintain identical package (8-SOIC), mounting type (surface mount), and electrical operating range (5V to 12V supply, -40°C to 85°C). AD8072JRZ and AD8072JRZ-REEL7 are the closest direct replacements. However, circuit-level validation is required for applications with tight bandwidth or slew rate specifications.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging is suitable for lower-volume applications and manual assembly processes. Tape & reel packaging is designed for automated pick-and-place assembly and high-volume production. The electrical specifications of the component remain identical; only the packaging format differs. TSH112ID is supplied in tube packaging, while alternatives like AD8008ARZ-REEL7, AD8072JRZ-REEL7, and LT1253CS8#TRPBF are available in tape & reel format.

Q: Why is the TSH112ID obsolete, and what does this mean for my design?

A: Obsolete status indicates that STMicroelectronics has discontinued manufacturing and will not produce additional units. Existing inventory may be available from authorized distributors, but long-term supply cannot be guaranteed. Designs using the TSH112ID should transition to active substitute parts to ensure continued component availability and support.

Q: Are there compliance differences between TSH112ID and the substitute parts?

A: Yes. The TSH112ID is RoHS non-compliant and does not carry ROHS3 certification. Most substitute parts (AD8008ARZ-REEL7, AD8072JRZ, AD8072JRZ-REEL7, EL5263ISZ, EL5263ISZ-T7, HA5023IBZ, LT1253CS8#PBF, LT1253CS8#TRPBF) are ROHS3 compliant. If your application or market requires RoHS compliance, select from the ROHS3-compliant alternatives.

Q: Which substitute offers the best performance improvement over TSH112ID?

A: EL5263ISZ and EL5263ISZ-T7 provide the highest slew rate (4000V/µs) and -3dB bandwidth (500 MHz), representing a 9x improvement in slew rate and 5x improvement in bandwidth. AD8008ARZ-REEL7 offers 1000V/µs slew rate and 500 MHz bandwidth with active product status. LMH6724MAX/NOPB provides 600V/µs slew rate and 370 MHz bandwidth with active status and lower supply current.

Q: What is the impact of different slew rates on circuit performance?

A: Slew rate determines the maximum rate of change of output voltage. Higher slew rates reduce signal distortion in high-frequency applications and minimize settling time. The TSH112ID's 450V/µs is suitable for applications up to approximately 100 MHz. Substitutes with higher slew rates (500V/µs to 4000V/µs) support higher frequency signals with lower distortion.

Q: Can I use a substitute with lower output current capability?

A: No. The TSH112ID provides 47 mA output current per channel. Substitutes must provide equal or greater output current to maintain load-driving capability. HA5023IBZ (20 mA) and AD8072JRZ/AD8072JRZ-REEL7 (30 mA) have lower output current and are not suitable direct replacements for applications requiring the full 47 mA output capability.

Q: What is the significance of input bias current and input offset voltage?

A: Input bias current (3 µA for TSH112ID) represents the DC current flowing into the amplifier inputs. Input offset voltage (900 µV for TSH112ID) is the DC voltage difference between inputs when output is zero. Lower values reduce DC errors in precision applications. Substitutes with lower input offset voltage (AD8008ARZ-REEL7 at 500 µV, LMH6724MAX/NOPB at 1000 µV) provide improved DC accuracy.

Q: Is automotive qualification (AEC-Q100) required for my application?

A: AEC-Q100 qualification is mandatory for automotive applications and indicates the part has passed rigorous automotive reliability testing. The TSH112ID carries this qualification. Among substitutes, only AD8008ARZ-REEL7, AD8072JRZ, AD8072JRZ-REEL7, and LMH6724MAX/NOPB maintain the same operating temperature range (-40°C to 85°C) suitable for automotive use. Verify specific AEC-Q100 certification requirements with the manufacturer if this is a critical requirement.

Q: What is the moisture sensitivity level (MSL), and why does it matter?

A: MSL indicates the component's sensitivity to moisture absorption during storage and handling. MSL 1 (unlimited shelf life) is superior to MSL 3 (168-hour limit). TSH112ID has MSL 1. Most substitutes also have MSL 1, except EL5263ISZ which has MSL 3. MSL 3 components require controlled storage conditions and have limited shelf life after opening the moisture barrier bag.

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