TLC27L4BCN CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC27L4BCN is a CMOS amplifier integrated circuit containing four independent operational amplifier circuits in a 14-pin DIP package. Manufactured by Texas Instruments under the LinCMOS™ series, this device is designated as Last Time Buy, indicating discontinued production with limited remaining inventory. The TLC27L4BCN operates across a 3V to 16V supply range and is suitable for low-power analog signal processing applications requiring multiple amplifier stages in a single package.

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the TLC27L4BCN. Alternative components with compatible electrical and mechanical specifications ensure design continuity and long-term supply chain reliability.

Substiute Parts

TLC27L4BCN

Texas InstrumentsIn Stock: 1209TLC27L4BCN Datasheet

Current PartRFQ

TLC27L4AIN

Texas InstrumentsIn Stock: 2095TLC27L4AIN Datasheet

MFR RecommendedRFQ

NJU7024D#

Nisshinbo Micro Devices Inc.In Stock: 715NJU7024D# Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC27L4BCN is determined by strict alignment with the following critical parameters:

Package Compatibility: All substitute parts must use the 14-DIP (0.300", 7.62mm) through-hole package to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: All substitute parts must contain exactly four independent CMOS amplifier circuits to maintain functional equivalence.

Supply Voltage Range: Substitute parts must support the minimum 3V supply requirement of the TLC27L4BCN. Maximum supply voltage of 16V is acceptable for all identified substitutes.

Output Current Capability: All substitute parts must deliver a minimum of 30 mA per channel to satisfy load requirements.

Amplifier Type: All substitute parts must be CMOS-based amplifiers to maintain electrical characteristics and low-power operation.

The TLC27L4AIN (Texas Instruments) and NJU7024D# (Nisshinbo Micro Devices Inc.) meet these substitution criteria. Both devices share identical package specifications, circuit count, and core electrical compatibility with the TLC27L4BCN.

Parameter Comparison

Engineering Selection Recommendations

TLC27L4AIN (Texas Instruments): This part is the direct functional equivalent of the TLC27L4BCN, manufactured by the same supplier. The TLC27L4AIN maintains identical electrical specifications including slew rate, gain bandwidth product, input bias current, and input offset voltage. The primary difference is an expanded operating temperature range (-40°C to 85°C versus 0°C to 70°C) and a minimum supply voltage of 4V instead of 3V. The TLC27L4AIN carries Active product status with 2000 units in stock, providing superior supply chain continuity. ROHS3 compliance is maintained. Selection of TLC27L4AIN is appropriate for applications where the 4V minimum supply voltage is acceptable and extended temperature operation is beneficial.

NJU7024D# (Nisshinbo Micro Devices Inc.): This part provides functional substitution with enhanced performance characteristics. The NJU7024D# delivers a 3.6× higher slew rate (0.4V/µs versus 0.05V/µs) and 3.6× higher gain bandwidth product (400 kHz versus 110 kHz), enabling faster signal processing. Supply current consumption increases to 150µA (2.6× higher than TLC27L4BCN). Input offset voltage is higher at 10 mV. The NJU7024D# supports the full 3V to 16V supply range and maintains Active product status with 652 units in stock. RoHS compliance is confirmed. Selection of NJU7024D# is appropriate for applications requiring higher bandwidth performance and accepting increased power consumption.

Both substitute parts satisfy mechanical compatibility, circuit configuration, and compliance requirements. Selection between TLC27L4AIN and NJU7024D# depends on application-specific performance and power consumption constraints.

Frequently Asked Questions (FAQ)

Q: Can the TLC27L4AIN directly replace the TLC27L4BCN in all applications?

A: The TLC27L4AIN is electrically equivalent to the TLC27L4BCN with identical slew rate, gain bandwidth product, input bias current, and output current specifications. The minimum supply voltage requirement increases from 3V to 4V. Direct substitution is valid for applications operating at 4V or higher supply voltages. Applications requiring 3V operation require the NJU7024D# or continued use of TLC27L4BCN inventory.

Q: What are the performance differences between TLC27L4AIN and NJU7024D#?

A: The NJU7024D# provides enhanced bandwidth performance with 0.4V/µs slew rate and 400 kHz gain bandwidth product, compared to 0.05V/µs and 110 kHz for TLC27L4AIN. This 3.6× performance increase is accompanied by 2.6× higher supply current (150µA versus 57µA). Input offset voltage is higher at 10 mV versus 1.1 mV. Both parts maintain 30 mA output current per channel and support 3V to 16V supply operation.

Q: Are all substitute parts RoHS compliant?

A: Yes. TLC27L4AIN carries ROHS3 compliance. NJU7024D# carries RoHS compliance. Both parts satisfy environmental regulatory requirements for lead-free manufacturing and restricted substance limitations.

Q: Does package compatibility extend to surface-mount alternatives?

A: No. All identified substitute parts use through-hole 14-DIP packaging. Surface-mount alternatives are not included in this substitution analysis. PCB layout modifications would be required for surface-mount device integration.

Q: What is the inventory status of substitute parts?

A: TLC27L4AIN has 2000 units in stock (Active product status). NJU7024D# has 652 units in stock (Active product status). Both parts provide superior supply availability compared to TLC27L4BCN (1113 units, Last Time Buy status).

Q: Can NJU7024D# be used in low-power applications where TLC27L4BCN was selected for 57µA supply current?

A: NJU7024D# supply current is 150µA, representing a 2.6× increase. Applications with strict power consumption budgets should retain TLC27L4AIN or TLC27L4BCN inventory. NJU7024D# is suitable for applications where bandwidth performance takes priority over power consumption.