TL3116IDR Equivalent & Substitute Parts

Part Overview

The TL3116IDR is a general-purpose comparator manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device features complementary, push-pull TTL output with single/dual supply voltage operation (5V ~ 10V, ±2.5V ~ 5V). The part is Active status and ROHS3 compliant, with 1541 units currently in stock.

Substitute parts are necessary when the original TL3116IDR becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements call for enhanced performance characteristics within compatible electrical parameters.

Key Parameters

Parameter	TL3116IDR
Manufacturer	Texas Instruments
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Type	General Purpose
Output Type	Complementary, Push-Pull, TTL
Voltage - Supply, Single/Dual (±)	5V ~ 10V, ±2.5V ~ 5V
Voltage - Input Offset (Max)	3mV @ ±5V
Current - Input Bias (Max)	1.1µA @ ±5V
Current - Output (Typ)	20mA
Current - Quiescent (Max)	15mA
CMRR, PSRR (Typ)	100dB CMRR
Propagation Delay (Max)	12ns
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the TL3116IDR is determined by the following critical parameters:

Package Compatibility: The 8-SOIC surface-mount package is the primary constraint. Direct substitutes must maintain identical or functionally equivalent pinout and footprint.

Output Type Compatibility: The complementary, push-pull TTL output configuration must be preserved or enhanced. CMOS output with TTL compatibility is acceptable as it provides superior performance characteristics.

Supply Voltage Range: Substitute parts must support the operating voltage range of 5V ~ 10V (single supply) or ±2.5V ~ 5V (dual supply). Extended ranges are acceptable.

Electrical Performance: Input offset voltage, input bias current, propagation delay, and quiescent current must remain within acceptable operational limits for the application. Lower values indicate improved performance.

Operating Temperature Range: The -40°C ~ 85°C range must be maintained or extended.

Compliance & Status: All substitute parts must maintain Active product status and ROHS3 compliance.

Substitute parts are grouped into two categories:

Category A - Direct Package Match (8-SOIC): AD8561ARZ, AD8561ARZ-REEL, AD8561ARZ-REEL7, LT1016CS8#PBF, LT1016CS8#TRPBF, LT1016IS8#PBF, LT1016IS8#TRPBF

Category B - Alternative Package (8-TSSOP): AD8561ARUZ

Category C - Through-Hole Alternative (8-DIP): LT1016CN8#PBF, LT1016IN8#PBF

Parameter Comparison

Parameter	TL3116IDR	AD8561ARZ	AD8561ARUZ	LT1016IS8#PBF	LT1016CN8#PBF
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Package / Case	8-SOIC	8-SOIC	8-TSSOP	8-SOIC	8-DIP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Through Hole
Type	General Purpose	General Purpose	General Purpose	with Latch	with Latch
Output Type	Complementary, Push-Pull, TTL	CMOS, Complementary, TTL	CMOS, Complementary, TTL	CMOS, Complementary, TTL	CMOS, Complementary, TTL
Voltage - Supply, Single/Dual (±)	5V ~ 10V, ±2.5V ~ 5V	3V ~ 10V, ±1.5V ~ 5V	3V ~ 10V, ±1.5V ~ 5V	-	-
Voltage - Input Offset (Max)	3mV @ ±5V	7mV @ 5V	7mV @ 5V	3mV @ ±5V	3mV @ ±5V
Current - Input Bias (Max)	1.1µA @ ±5V	6µA @ 5V	6µA @ 5V	10µA @ ±5V	10µA @ ±5V
Current - Output (Typ)	20mA	-	-	20mA	20mA
Current - Quiescent (Max)	15mA	6mA, 3.3mA, 5.5mA	6mA, 3.3mA, 5.5mA	35mA	35mA
CMRR, PSRR (Typ)	100dB CMRR	85dB CMRR, 65dB PSRR	85dB CMRR, 65dB PSRR	96dB CMRR, 75dB PSRR	96dB CMRR, 75dB PSRR
Propagation Delay (Max)	12ns	9.8ns	9.8ns	14ns	14ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active
Inventory (Pcs)	1541	12780	49570	1320	3448

Engineering Selection Recommendations

For Direct 8-SOIC Surface-Mount Replacement:

AD8561ARZ and its packaging variants (AD8561ARZ-REEL, AD8561ARZ-REEL7) provide the closest electrical and mechanical compatibility. These parts maintain the 8-SOIC package footprint, surface-mount configuration, and extended operating temperature range (-40°C ~ 85°C). All variants are Active status and ROHS3 compliant. The AD8561ARZ series offers improved quiescent current performance (6mA maximum versus 15mA) and faster propagation delay (9.8ns versus 12ns). Supply voltage range extends to 3V minimum, providing broader application flexibility.

For Alternative Surface-Mount Package:

AD8561ARUZ in 8-TSSOP package offers identical electrical performance to AD8561ARZ with a narrower package footprint (4.40mm width versus 3.90mm). This option is suitable when PCB layout constraints require a smaller form factor. Highest inventory availability (49570 units) ensures supply continuity.

For Through-Hole Applications:

LT1016IN8#PBF maintains the full -40°C ~ 85°C operating temperature range in 8-DIP through-hole package. LT1016CN8#PBF operates within 0°C ~ 70°C range. Both incorporate latch functionality and are Active, ROHS3 compliant devices. These options are appropriate for legacy board designs or applications requiring through-hole mounting.

For Latch-Equipped Variants:

LT1016 series (all variants) include integrated latch functionality not present in the base TL3116IDR. These parts are suitable only when latch capability is required or when existing designs already incorporate latch-dependent circuitry. LT1016IS8#PBF and LT1016IS8#TRPBF maintain 8-SOIC surface-mount configuration with -40°C ~ 85°C temperature range.

All recommended substitutes maintain ROHS3 compliance and Active product status, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can AD8561ARZ directly replace TL3116IDR without PCB modifications?

A: Yes, for surface-mount applications. Both devices use identical 8-SOIC package with 0.154" width and 3.90mm body dimensions. Pinout compatibility must be verified against specific application schematics, as output type differs (CMOS versus push-pull TTL), though both provide TTL-compatible outputs.

Q: What is the difference between AD8561ARZ and AD8561ARUZ?

A: Package format only. AD8561ARZ uses 8-SOIC (0.154" width), while AD8561ARUZ uses 8-TSSOP (0.173" width). Electrical specifications are identical. Selection depends on PCB layout requirements and available footprint space.

Q: Why do LT1016 variants show different quiescent current values?

A: The LT1016 series includes integrated latch functionality, resulting in higher quiescent current (35mA maximum) compared to general-purpose comparators. Multiple current values indicate different operating modes or supply configurations.

Q: Can LT1016CN8#PBF replace TL3116IDR in all applications?

A: No. LT1016CN8#PBF operates only to 70°C maximum, versus TL3116IDR's 85°C upper limit. This variant is unsuitable for applications requiring full -40°C ~ 85°C temperature range. LT1016IN8#PBF supports the complete temperature range.

Q: What is the significance of packaging suffixes like #PBF, #TRPBF, and -REEL?

A: These indicate packaging and delivery format. #PBF denotes tube packaging, #TRPBF indicates tape and reel format, and -REEL variants specify Digi-Reel® packaging. Electrical specifications remain identical; selection depends on manufacturing process requirements and quantity needs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original TL3116IDR specification.

Q: Which substitute offers the best performance improvement?

A: AD8561ARZ series provides faster propagation delay (9.8ns versus 12ns) and lower quiescent current (6mA versus 15mA), representing measurable performance enhancement while maintaining compatibility.

Q: Can through-hole LT1016 variants be used on surface-mount PCBs?

A: No. Through-hole packages require plated via holes and different PCB layout. These variants are appropriate only for through-hole PCB designs or when legacy board compatibility is required.

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