SN74S85D Texas Instruments Integrated Circuit (Other) In Stock
The SN74S85D is a 4-bit magnitude comparator from Texas Instruments in the high-speed S (Schottky) logic family, operating from 4.75V to 5.25V supply. It provides A>B, A=B, and A<B outputs with cascading inputs for multi-bit comparison in a 16-pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74S85D Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0400(MOQ 500)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74S85D?
- 4-bit magnitude comparator with three comparison outputs (A>B, A=B, A<B) enabling word-length comparison in a single IC
- Cascadable design with dedicated cascade inputs allowing expansion to 8-bit, 16-bit, or larger magnitude comparisons without external logic
- High-speed Schottky (S family) technology operating at 4.75V to 5.25V with 20mA output sink current and 15 pF load capacitance for fast decision logic
- Non-inverting, 3-state compatible outputs simplifying integration into bus-oriented digital systems and priority encoders
- 16-pin SOIC (R-PDSO-G16) package with RoHS-compliant, Pb-free construction for industrial and commercial logic applications
What is SN74S85D used for?
The SN74S85D is used in digital systems requiring fast numeric comparison, such as address decoders, priority arbiters, and range detectors in microprocessor-based hardware. Its cascadable architecture makes it ideal for multi-byte magnitude comparators in ALUs, sorting networks, and inequality detection circuits in PLDs and FPGA glue logic. It is also used in test and measurement equipment and industrial controllers for set-point comparison and threshold detection in real-time control loops.
What are the specifications of SN74S85D?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | CASCADABLE |
| Family | S |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | MAGNITUDE COMPARATOR |
| Max I(ol) | 0.02A |
| Number of Bits | 4 |
| Number of Functions | 4 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 115mA |
| Prop. Delay@Nom-Sup | 18ns |
| Propagation Delay (tpd) | 16.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Where can I find the SN74S85D datasheet?
SN74S85D Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74S85D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How can the SN74S85D be cascaded for wider bit comparisons?
The SN74S85D includes dedicated cascade inputs (A>B, A=B, A<B) that accept the output of a less-significant comparator stage, allowing multiple SN74S85D devices to be chained together to compare 8-bit, 16-bit, or larger words without additional external logic or glue circuitry.
What logic family does the SN74S85D belong to and what are its electrical characteristics?
The SN74S85D belongs to the S (Schottky TTL) logic family, operating from a 4.75V to 5.25V supply. It supports a load capacitance of 15 pF and provides output sink current of 20mA, making it compatible with standard TTL-level loads in high-speed digital systems.
What outputs does the SN74S85D provide?
The SN74S85D provides three comparison outputs: A greater than B (A>B), A equal to B (A=B), and A less than B (A<B). These outputs are non-inverting and indicate the magnitude relationship between two 4-bit binary words applied to the A and B input ports.
What package does the SN74S85D come in?
The SN74S85D is available in a 16-pin SOIC (R-PDSO-G16) package, which is a surface-mount small-outline package suitable for automated PCB assembly. The SOIC-16 is a widely used and well-stocked package format for standard logic ICs.
What are common applications for the SN74S85D?
Common applications include address range comparators in memory decoders, arithmetic comparison in ALU designs, priority sorting circuits, set-point detectors in process control systems, and multi-stage cascaded comparators in test equipment that need to rapidly determine numeric ordering of digital values.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $2.3000 | $1150.00 |
| 1000+ | $2.1700 | $2170.00 |
| 10000+ | $2.0400 | $20400.00 |
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