CD74HC147M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HC147M is a high-speed CMOS 10-to-4 line priority encoder by Texas Instruments, encoding 9 active-low inputs to a 4-bit BCD output. Key specs: 9-input priority encoder, 50 pF load capacitance, 16-pin SOIC package, 2 V to 6 V supply. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC147M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2492(MOQ 40)
- 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 CD74HC147M?
- 9-to-4 line priority encoder resolves simultaneous input assertions to highest-priority BCD output, simplifying interrupt and keypad decoding logic
- High-speed CMOS HC family provides fast propagation times with rail-to-rail output swing and very low quiescent current
- Wide 2 V to 6 V supply voltage range ensures compatibility with both 3.3 V and 5 V digital systems
- Active-low inputs and outputs conform to standard priority encoder conventions for direct interfacing with microcontrollers and FPGAs
- 16-pin SOIC surface-mount package enables space-efficient PCB layouts with straightforward automated assembly
What is CD74HC147M used for?
The CD74HC147M is used in keyboard encoder circuits, interrupt priority resolution, and BCD data encoding applications where multiple input signals must be reduced to a compact binary code. It is commonly found in industrial control panels, human-interface devices, and embedded systems that need to determine the highest-priority active signal among up to nine inputs. Its HC CMOS technology ensures reliable operation across a wide voltage and temperature range, making it suitable for both commercial and industrial environments.
What are the specifications of CD74HC147M?
| YTEOL | 0 |
| Additional Feature | 9 TO 4 LINE PRIORITY ENCODER |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | ENCODER |
| Max I(ol) | 0.0052A |
| Number of Bits | 9 |
| Number of Functions | 1 |
| 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) | 0.16mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 240ns |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| 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 | Mexico |
Where can I find the CD74HC147M datasheet?
CD74HC147M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC147M?
Compatible alternatives and drop-in replacements for CD74HC147M:
Frequently Asked Questions
How many inputs does the CD74HC147M support, and what is the output format?
The CD74HC147M accepts 9 active-low data inputs (D1 through D9) and encodes them to a 4-bit active-low BCD (Binary Coded Decimal) output. Input D9 has the highest priority; when asserted, it overrides all lower-priority inputs regardless of their state.
What is the operating supply voltage range for the CD74HC147M?
The device operates from 2 V to 6 V, which makes it compatible with both 3.3 V and 5 V digital logic systems. This wide range is a characteristic advantage of the HC CMOS family over older TTL devices that required a fixed 5 V rail.
What package does the CD74HC147M use?
The CD74HC147M is housed in a 16-pin Small Outline IC (SOIC) package (R-PDSO-G16), a standard surface-mount package widely supported by PCB fabrication and assembly processes. The SOIC package balances pin density with solderability and rework ease.
What are typical applications for the CD74HC147M?
Typical applications include keyboard matrix encoders, interrupt priority controllers, numeric keypad interfaces, and multi-input multiplexing circuits. Any design needing to map up to 9 input signals to a 4-bit BCD code with automatic priority resolution can leverage this device.
Is the CD74HC147M pin-compatible with older TTL priority encoders like the 74LS147?
Yes, the CD74HC147M is functionally and pin-compatible with the 74LS147 priority encoder. However, it offers improved drive capability, lower power consumption, and wider supply voltage range due to the CMOS HC technology, making it a direct, higher-performance replacement in existing 74LS designs.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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 |
|---|---|---|
| 40+ | $0.7610 | $30.44 |
| 240+ | $0.6310 | $151.44 |
| 700+ | $0.2876 | $201.32 |
| 900+ | $0.2780 | $250.20 |
| 1205+ | $0.2492 | $300.29 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit