CD74HC173PW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC173PW is a high-speed CMOS quad D-type flip-flop with 3-state outputs and dual output enable, offering 4 independent storage bits with a 50 pF load capacitance and 7.8 mA sink current. It is packaged in a 16-pin TSSOP for surface-mount assembly. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC173PW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4085(MOQ 1)
- 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 CD74HC173PW?
- 4-bit D-type register with dual output-enable pins for flexible bus interface and tri-state bus-sharing control
- 3-state outputs rated at 7.8 mA sink current support direct connection to HC-family data buses without buffering
- HC/UH CMOS family in 16-pin TSSOP delivers high-speed clocking with 50 pF load rating for dense PCB layouts
What is CD74HC173PW used for?
The CD74HC173PW is used as a 4-bit data register and bus interface element in microprocessor memory systems and FPGA peripheral expansion boards, where its dual output-enable pins allow multiple registers to share a common 4-bit data bus without contention. It is also employed in state-machine designs and shift-register chains where registered 3-state outputs are needed to hold and drive parallel data onto shared backplane buses. Its compact TSSOP-16 package suits tight PCB layouts in industrial automation controllers and embedded computing modules.
What are the specifications of CD74HC173PW?
| YTEOL | 0 |
| Additional Feature | WITH DUAL OUTPUT ENABLE |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.0078A |
| Number of Bits | 4 |
| Number of Functions | 4 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 60ns |
| 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 Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the CD74HC173PW datasheet?
CD74HC173PW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC173PW?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the dual output-enable feature of the CD74HC173PW facilitate multi-device bus sharing on a 4-bit data bus?
The CD74HC173PW includes two independent output-enable pins that must both be asserted low to activate the 3-state outputs, allowing a wired-AND enable scheme where two control signals must agree before the device drives the bus. This prevents accidental bus contention when multiple CD74HC173PW registers share the same 4-bit data lines, and it simplifies glitch-free handshaking in microprocessor memory-mapped register files with a 7.8 mA output sink capability.
What clock frequency and load conditions can the CD74HC173PW sustain in a cascaded 8-bit or 16-bit register design?
The CD74HC173PW is specified at a 50 pF load capacitance and, within the HC/UH family, typically achieves clock frequencies above 50 MHz at 5 V supply. Cascading two devices to form an 8-bit register is straightforward since both share the same clock and enable signals; the 7.8 mA 3-state output drive is sufficient to charge 50 pF bus capacitance within the required setup-and-hold window for downstream HC logic at standard operating frequencies.
In which embedded-system register-file designs does the TSSOP-16 package of the CD74HC173PW offer a size advantage over a DIP alternative?
The 16-pin TSSOP package of the CD74HC173PW occupies roughly half the PCB area of an equivalent DIP-16 package, which is significant when four or more 4-bit registers must be placed adjacent to a microcontroller in a compact embedded controller module. The surface-mount TSSOP also supports automated pick-and-place assembly in production volumes, reducing per-unit cost compared to manual DIP insertion, while retaining the full 50 pF load and 7.8 mA sink performance of the HC/UH family.
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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
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| 1+ | $0.9800 | $0.98 |
| 58+ | $0.6285 | $36.45 |
| 250+ | $0.5028 | $125.70 |
| 500+ | $0.4400 | $220.00 |
| 1000+ | $0.4085 | $408.50 |
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