SN74ALS561ADWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ALS561ADWRG4 is an 8-bit binary up-counter from Texas Instruments' Advanced Low-power Schottky (ALS) logic family. It features terminal count output, count enable inputs, synchronous load/preset, 30 MHz maximum clock frequency, and 8 mA output sink current in a 20-pin SOIC package. From $2.00 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS561ADWRG4 Datasheet PDF
- Category
- Integrated Circuit
- 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 SN74ALS561ADWRG4?
- 8-bit synchronous up-counter with terminal count output for cascading multi-counter chains
- Count enable inputs and synchronous load/preset for flexible counter control
- 30 MHz maximum clock frequency in the proven ALS low-power Schottky logic family
- Green RoHS-compliant 20-pin SOIC package for modern industrial and embedded designs
What is SN74ALS561ADWRG4 used for?
The SN74ALS561ADWRG4 is suited for event counting, frequency division, and timing control circuits in industrial automation, test equipment, and digital communication systems. Its synchronous load and preset capability allows initialization to any count value, making it useful for programmable timer and sequencer designs. The terminal count output enables cascading multiple devices to build wider 16-bit or 32-bit counter chains without additional glue logic.
What are the specifications of SN74ALS561ADWRG4?
| YTEOL | 0 |
| Additional Feature | TCO OUTPUT; COUNT ENABLE INPUTS |
| Count Direction | UP |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 30000000Hz |
| Max I(ol) | 0.008A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 36mA |
| Prop. Delay@Nom-Sup | 18ns |
| Propagation Delay (tpd) | 18ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 30MHz |
| 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 SN74ALS561ADWRG4 datasheet?
SN74ALS561ADWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS561ADWRG4?
Compatible alternatives and drop-in replacements for SN74ALS561ADWRG4:
Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16
Binary Counter, ALS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16
Frequently Asked Questions
Which designs benefit from SN74ALS561ADWRG4's 50 pF rating?
SN74ALS561ADWRG4 fits filtering and RF matching and related production circuits where designers need surface mount capacitor behavior with 50 pF, 70°C, 20 pins and 30 MHz. The Small Outline Packages format and 20 pins configuration support compact automated assembly.
How should engineers review the Small Outline Packages footprint before approving SN74ALS561ADWRG4?
Check the recommended land pattern, solder process, and clearance for Small Outline Packages before release. Its 20 pins configuration and 70°C rating make it practical for dense SMT boards.
What procurement checks matter before sourcing SN74ALS561ADWRG4 for production builds?
Confirm Texas Instruments traceability, lifecycle status, and lot consistency before release. The buyer should match the quoted part to 50 pF, 70°C, 20 pins and 30 MHz and verify 20 pins packaging requirements.
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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.
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