CD74HC161MG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC161MG4 is a high-speed CMOS 4-bit synchronous binary up-counter from Texas Instruments with synchronous clear, load, and terminal count output (TCO), operating at up to 20 MHz in a 16-pin small outline package. It features active-high preset and parallel load capability for flexible counter programming in digital timing and frequency division circuits. Available in stock globally with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC161MG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-bit synchronous binary up-counter with terminal count output (TCO) for cascaded multi-stage counting
- Synchronous parallel load and clear inputs for programmable counter initialization
- HC/UH high-speed CMOS logic family with 50 pF load capacitance at up to 20 MHz clock rate
- 16-pin SOIC package (JESD-30 R-PDSO-G16) for standard surface-mount PCB assembly
- RoHS-compliant Pb-free construction (JESD-609 e4) suitable for green product programs
Applications
The CD74HC161MG4 is widely used in digital clock generation, frequency division, event counting, and timing control circuits in consumer electronics, industrial automation, and embedded systems. Its synchronous load and clear features make it ideal for programmable timers, address generators, and modular counter chains in FPGA peripheral and microcontroller-based designs.
Specifications
| YTEOL | 0 |
| Additional Feature | TCO OUTPUT |
| Count Direction | UP |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.004A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| 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) | 50mA |
| Prop. Delay@Nom-Sup | 56ns |
| Propagation Delay (tpd) | 280ns |
| 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 |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC161MG4:
Binary Counter, HC/UH Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDSO16
Frequently Asked Questions
What is the maximum counting frequency of the CD74HC161MG4?
The CD74HC161MG4 operates at a maximum clock frequency of 20 MHz, which is typical of the HC/UH high-speed CMOS logic family. This clock speed is sufficient for most digital timing, frequency division, and event counting applications in microcontroller-based systems and FPGA peripheral designs operating at standard clock rates.
What control inputs does the CD74HC161MG4 have and how do they work?
The CD74HC161MG4 features synchronous parallel load, synchronous clear, and count enable inputs, plus a terminal count output (TCO). The parallel load allows presetting the counter to any 4-bit value on the next rising clock edge, while the synchronous clear resets the counter in sync with the clock, preventing glitches. The TCO output simplifies cascading multiple counters for wider bit widths.
What package is the CD74HC161MG4 available in?
The CD74HC161MG4 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, JESD-30 code R-PDSO-G16. This standard surface-mount package is compatible with automated PCB assembly and offers a good balance of component density and thermal performance for both commercial and industrial applications.
Can the CD74HC161MG4 be cascaded to create wider counters?
Yes, the CD74HC161MG4 is designed for easy cascading via its terminal count output (TCO). By connecting the TCO of one stage to the count enable of the next, designers can build 8-bit, 12-bit, or larger synchronous binary counters. This cascading capability is useful for frequency dividers, event counters, and programmable timers requiring more than 4 bits of range.
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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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