CD54ACT161F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54ACT161F3A is a synchronous 4-bit binary up-counter from Texas Instruments in the ACT CMOS family, housed in a 16-pin ceramic DIP package for high-reliability applications. It features synchronous load, synchronous clear, carry output (TCO), and a 50 pF load capacitance rating for military and industrial use. Available from stock with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD54ACT161F3A Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.5600(MOQ 500)
- 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 CD54ACT161F3A?
- Synchronous 4-bit binary up-counter with terminal count output (TCO) enables easy cascading to 8-bit, 16-bit, or wider counters
- Synchronous parallel load allows the counter to be preset to any 4-bit value in a single clock cycle for flexible sequencing
- ACT CMOS family provides TTL-compatible input thresholds with low quiescent current below 80 µA for mixed-logic designs
- Ceramic CDIP-16 package delivers hermetic sealing for mil-temp operation from -55 °C to 125 °C in aerospace and defense systems
What is CD54ACT161F3A used for?
The CD54ACT161F3A is used in military, aerospace, and high-reliability industrial systems requiring synchronous binary counters for address sequencing, frequency division, and event counting in ruggedized embedded control boards. Its synchronous load and carry output allow multiple devices to cascade into 8-bit or 16-bit counters for DMA address generation, PWM period counting, and clock division circuits. The ceramic CDIP-16 package ensures long-term hermetic reliability in radar signal processors, avionics computers, and satellite subsystems operating over the full -55 °C to 125 °C military temperature range.
What are the specifications of CD54ACT161F3A?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TCO OUTPUT |
| Count Direction | UP |
| Family | ACT |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 80000000Hz |
| Max I(ol) | 0.024A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 15ns |
| Propagation Delay (tpd) | 16.5ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 80MHz |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the CD54ACT161F3A datasheet?
CD54ACT161F3A Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD54ACT161F3A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How can CD54ACT161F3A be cascaded to count beyond 4 bits, and what is the maximum clock frequency supported?
The CD54ACT161F3A provides a terminal count output (TCO) that goes high when the counter reaches its maximum count of 15, enabling direct cascading by connecting TCO to the count enable (CEP/CET) inputs of the next stage. Two cascaded CD54ACT161F3A devices form an 8-bit counter spanning 0 to 255, and four devices create a 16-bit counter. The ACT family supports clock frequencies up to 160 MHz at 5 V supply, allowing the cascaded design to process pulse trains and frequency-divided signals well into the MHz range.
What does the synchronous parallel load feature of CD54ACT161F3A allow designers to do in sequencing applications?
The synchronous parallel load input allows any 4-bit value from 0 to 15 to be loaded into the counter register on the next rising clock edge, enabling the counter to start from a preset value rather than always resetting to zero. This is essential in frequency synthesis dividers where the division ratio must be set to a non-power-of-2 value, such as dividing by 10 to generate a decimal counter. The synchronous load avoids glitches in the output because the transition happens on the clock edge, unlike asynchronous reset circuits.
When would an engineer specify CD54ACT161F3A in ceramic CDIP versus a plastic SOIC version of the same counter?
The ceramic CDIP-16 package of CD54ACT161F3A is specified when the application requires hermetic sealing for moisture resistance below 0.01% absorption and operation across the full military temperature range of -55 °C to 125 °C. Plastic SOIC packages absorb up to 0.3% moisture and are typically rated only to 85 °C, making them unsuitable for avionics, deep-space electronics, and downhole instrumentation tools exposed to humidity and extreme temperatures. The ceramic variant also offers superior radiation tolerance relevant to satellite and nuclear instrumentation designs.
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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 |
|---|---|---|
| 500+ | $8.5100 | $4255.00 |
| 1000+ | $8.0300 | $8030.00 |
| 10000+ | $7.5600 | $75600.00 |
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