CD74ACT163E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74ACT163E is a 4-bit synchronous binary counter by Texas Instruments in the ACT logic family, housed in a 16-pin DIP package. Key specs: synchronous clear and load, terminal-count output, 5 V supply with TTL-compatible inputs, and 50 pF load capacitance rating. In stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74ACT163E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2260(MOQ 250)
- 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 CD74ACT163E?
- Synchronous clear and synchronous parallel load allow glitch-free preset to any 4-bit value without clock-edge uncertainty
- Terminal-count output (TCO/RCO) enables direct cascade of multiple CD74ACT163E devices to build 8-bit, 12-bit, or wider counters without external gates
- ACT logic family bridges TTL-level inputs and CMOS-speed outputs, making it compatible with both 5 V TTL and CMOS logic systems
- 16-pin DIP package supports breadboard prototyping and through-hole PCB assembly for lab and legacy industrial designs
- Synchronous up-counting with programmable load provides flexible frequency division and event-counting in digital control circuits
What is CD74ACT163E used for?
CD74ACT163E is used in digital frequency dividers, event counters, and address sequencers in industrial control panels and legacy logic boards operating at 5 V. Its synchronous load and clear inputs make it suitable for programmable timer circuits in PLCs and test equipment where a known starting state must be set without glitches. Engineers also use cascaded CD74ACT163E devices to build wider modulo-N counters for stepper motor position tracking and clock generation in 5 V TTL-compatible systems.
What are the specifications of CD74ACT163E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TCO OUTPUT |
| Count Direction | UP |
| Family | ACT |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Load/Preset Input | YES |
| Logic IC Type | BINARY COUNTER |
| Max Frequency@Nom-Sup | 90000000Hz |
| Max I(ol) | 0.024A |
| Mode of Operation | SYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| 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 |
| 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 | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 80MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Where can I find the CD74ACT163E datasheet?
CD74ACT163E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74ACT163E?
Compatible alternatives and drop-in replacements for CD74ACT163E:
Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS, PDIP16
Frequently Asked Questions
How can multiple CD74ACT163E devices be cascaded to build a counter wider than 4 bits?
The terminal-count output (RCO) goes high when the counter reaches its maximum value of 15 (binary 1111), and this signal connects directly to the count-enable inputs (CEP and CET) of the next stage. Two cascaded CD74ACT163E devices form an 8-bit counter with a modulus of 256, and three form a 12-bit counter with a modulus of 4096, all without external glue logic.
What is the difference between synchronous clear and asynchronous clear, and which does CD74ACT163E use?
CD74ACT163E implements synchronous clear, meaning the outputs reset to 0000 on the next rising clock edge after the clear input is asserted, not immediately. This eliminates the narrow output glitches that occur with asynchronous clear designs at clock edges and is preferred in pipelined digital systems where output changes must align with the clock edge.
At what supply voltage does CD74ACT163E operate, and is it compatible with 3.3 V logic signals?
CD74ACT163E requires a 5 V supply voltage. Its input thresholds follow TTL levels, with VIH minimum at 2 V and VIL maximum at 0.8 V. A 3.3 V logic output driving these inputs will typically meet the 2 V VIH requirement, so direct 3.3 V-to-5 V level connection is often feasible, but the output drive from the 5 V device cannot directly drive a 3.3 V input without a level translator.
How does the 16-pin DIP package of CD74ACT163E affect prototyping compared to SOIC or TSSOP alternatives?
The 16-pin DIP has a 2.54 mm through-hole pitch that plugs directly into standard breadboards and DIP sockets, making it ideal for rapid prototyping and laboratory experiments without soldering. SOIC and TSSOP variants of the same counter core have lead pitches of 1.27 mm and 0.65 mm respectively, which require an SMD adapter or hot-air soldering station to prototype.
For a 4-bit frequency divider application, how does CD74ACT163E compare to a ripple counter such as CD74AC163E?
CD74ACT163E is a synchronous counter where all 4 output bits toggle on the same clock edge, producing clean output transitions with minimal timing skew. A ripple counter propagates the carry through each flip-flop in sequence, introducing up to 4 × gate-propagation delays (typically 5 ns to 8 ns per stage) between Q0 and Q3, which causes glitches on decoded outputs and is unsuitable for glitch-sensitive logic downstream.
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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.
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| 1000+ | $0.3180 | $318.00 |
| 2000+ | $0.2570 | $514.00 |
| 5000+ | $0.2260 | $1130.00 |
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