CD74HC173NSR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC173NSR is a 4-bit D-type register bus driver IC from Texas Instruments with dual output enable in the HC/UH CMOS family. It features 6 mA output drive, 50 pF load capacitance, and a 16-pin SOIC package in tape-and-reel. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC173NSR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1597(MOQ 20000)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC173NSR?
- 4-bit bus driver register with dual output enable for flexible tri-state bus control in a 16-pin SOIC package
- HC/UH CMOS family with 50 pF load capacitance rating ensuring stable data latching and driving on standard digital buses
- Tape-and-reel (NSR) packaging enabling automated SMT pick-and-place assembly for high-volume production of digital logic boards
What is CD74HC173NSR used for?
The CD74HC173NSR is used as a 4-bit data register and bus driver in digital systems where latched data must be conditionally driven onto a shared bus under dual enable control. Its dual output enable feature allows independent gating of the 4-bit output, making it ideal for data bus arbitration and buffered register file designs in microprocessor systems. Engineers use it in memory interface boards, I/O expansion circuits, and parallel data latching applications operating on 5 V HC-family logic rails.
What are the specifications of CD74HC173NSR?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Propagation Delay (tpd) | 300ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Trigger Type | POSITIVE EDGE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the CD74HC173NSR datasheet?
CD74HC173NSR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC173NSR?
Compatible alternatives and drop-in replacements for CD74HC173NSR:
Frequently Asked Questions
What does the dual output enable feature of the CD74HC173NSR allow in a bus design?
The dual output enable inputs of the CD74HC173NSR allow independent control of whether the 4-bit latched data is driven onto the bus or held in a high-impedance tri-state. This enables multiple register ICs to share a single 4-bit bus without output contention, a key requirement in data bus arbitration designs.
What output current can the CD74HC173NSR drive and how does this affect bus loading?
The CD74HC173NSR provides a maximum low-level output current (I_OL) of 6 mA and is rated for a load capacitance of 50 pF. This drive level is sufficient for standard CMOS bus loads but limits the number of fanout devices that can be connected directly without additional bus buffers.
How many data bits does the CD74HC173NSR store and transfer?
The CD74HC173NSR is a 4-bit device, storing and transferring 4 bits of data in parallel. It is useful for nibble-wide data buses and can be cascaded with a second CD74HC173NSR to form an 8-bit byte-wide register bus driver.
Why is the NSR tape-and-reel variant preferred over tube packaging for production PCB assembly?
The NSR suffix indicates a tape-and-reel format compatible with automated SMT pick-and-place machines, reducing manual handling and component feed errors during high-volume manufacturing. Tube-packaged versions require manual loading, increasing assembly time and cost per board.
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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 |
|---|---|---|
| 20000+ | $0.1625 | $3250.00 |
| 28000+ | $0.1610 | $4509.12 |
| 40000+ | $0.1596 | $6386.00 |
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