My Inquiry
My Account
NXP Semiconductors 74HC390PW,112
- Part No.:
- 74HC390PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Counters, Dividers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC390PW,112.pdf
- Description:
- IC DUAL DEC RIPPLE COUNT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HC390PW,112 from Nexperia is a dual 4-bit decade ripple counter IC comprising two independent BCD/bi-quinary counters, each with separate divide-by-2 and divide-by-5 sections, asynchronous master reset inputs (1MR, 2MR), and HIGH-to-LOW edge-triggered clocks (1CP0/1CP1, 2CP0/2CP1); operates from 4.5 V to 5.5 V, supports counting configurations up to ÷100, and is used in frequency division and digital timing circuits for industrial control panels and instrumentation.
For engineers reviewing the 74HC390PW,112 datasheet, 74HC390PW,112 pinout, 74HC390PW,112 application, or 74HC390PW,112 equivalent, this page delivers verified functional architecture, TSSOP16 package mapping, BCD/bi-quinary configuration logic, propagation delay specs at 4.5 V and 5 V, and validated alternatives for legacy TTL/CMOS clock tree design.
Technical Context
The device implements two independent 4-bit ripple counters: each consists of a divide-by-2 stage (Q0) cascaded with a divide-by-5 stage (Q1–Q3), enabling BCD (Q0→CP1) or bi-quinary (Q3→CP0) decade operation. Clocks are asynchronous edge-triggered on HIGH-to-LOW transitions, and master resets (1MR, 2MR) override all clock activity to force outputs LOW.
It features CMOS-level input thresholds (VIH = 3.15 V min at VCC = 4.5 V), 16-pin TSSOP package (SOT403-1), -40 °C to +125 °C operating range, and dynamic performance including tpd = 17 ns (nCP0→nQ0) and fmax = 55 MHz at VCC = 4.5 V, CL = 15 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dual decade ripple counter with independent ÷2 and ÷5 sections per decade |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/CMOS systems |
| Operating Temperature | -40 °C to +125 °C - supports industrial and extended-temperature embedded applications |
| Propagation Delay | 17 ns (nCP0→nQ0, VCC = 4.5 V, CL = 15 pF) - defines maximum clock-to-output timing margin |
| Max Clock Frequency | 55 MHz (VCC = 4.5 V, CL = 15 pF) - sets upper limit for high-speed frequency division |
| Input Threshold | VIH = 3.15 V min, VIL = 1.35 V max (VCC = 4.5 V) - enables reliable interfacing with TTL logic |
| Power Dissipation | CPD = 20 pF - used to calculate dynamic power: PD = CPD × VCC² × fi × N |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16 leads, body width 4.4 mm, lead pitch 0.65 mm, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 (1CP0, 2CP0) | Divide-by-2 clock input | HIGH-to-LOW edge-triggered; initiates toggle of Q0 output per section |
| 2, 14 (1MR, 2MR) | Asynchronous master reset | Active HIGH; forces all four outputs (Q0–Q3) LOW regardless of clock state |
| 3, 5, 6, 7 (1Q0–1Q3) | First decade outputs | Binary-coded outputs for section 1; Q0 is LSB, Q3 is MSB in BCD mode |
| 4, 12 (1CP1, 2CP1) | Divide-by-5 clock input | HIGH-to-LOW edge-triggered; advances Q1–Q3 when driven by Q0 or Q3 |
| 8 | GND | Ground reference for all internal logic and I/O |
| 9–13 (2Q0–2Q3) | Second decade outputs | Independent binary outputs for section 2; supports concurrent dual-counting |
| 16 | VCC | Positive supply rail; must be decoupled locally to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decade counters | Enables simultaneous BCD timing and frequency division in one IC, reducing board space vs. discrete 74-series solutions |
| Configurable BCD or bi-quinary operation | Supports both standard decade decoding (Q0→CP1) and bi-quinary encoding (Q3→CP0) without external logic |
| Two asynchronous master reset inputs | Allows selective clearing of either decade counter without affecting the other - critical for multi-stage timing sequences |
| CMOS-level input compatibility | VIH = 3.15 V min at 4.5 V supply ensures robust noise margin when interfacing with 5 V microcontrollers and logic families |
| High noise immunity & latch-up protection | Latch-up performance >100 mA per JESD78 Class II Level B - guarantees reliability in electrically noisy industrial environments |
Applications
| Industrial Control Panels | Digital Instrumentation Displays |
|---|---|
Use Scenario: Counting encoder pulses in PLC-based motor control cabinets to track position or speed over multiple decades. IC Role / Device Role / Timing Role: Dual decade counter provides scalable ÷10, ÷100 division while maintaining synchronous reset across stages. Use Value: Eliminates need for external glue logic between encoder interface and microcontroller, reducing BOM count and layout complexity. |
Use Scenario: Driving 7-segment LED displays in multimeter or oscilloscope front panels requiring stable BCD output. IC Role / Device Role / Timing Role: Configured in BCD mode with Q0–Q3 feeding display decoder ICs; nMR enables digit zeroing on power-up. Use Value: Delivers deterministic decade rollover timing (tPHL = 18 ns) essential for flicker-free numeric updates at 100 Hz refresh rates. |
| Legacy Equipment Timing Circuits | Frequency Division in Signal Generators |
Use Scenario: Replacing obsolete 74LS390 in retro-computing or test equipment where TTL-compatible inputs are required. IC Role / Device Role / Timing Role: Used as drop-in replacement with identical pinout and function; HCT variant supports direct TTL interfacing. Use Value: Maintains original timing behavior (tpd = 21 ns at 4.5 V) while improving power efficiency and thermal margin over bipolar predecessors. |
Use Scenario: Generating precise sub-harmonics (e.g., 1 MHz → 10 kHz) in benchtop function generators via cascaded ÷10 stages. IC Role / Device Role / Timing Role: Two counters wired in series (first ÷10, second ÷10) yield exact ÷100 division with minimal jitter accumulation. Use Value: Achieves <1% duty cycle deviation across full temperature range due to matched internal FF propagation characteristics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decade counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT390PW,118 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and package | Better suited for mixed-signal systems with legacy 74LS/TTL drivers; same thermal profile and drive strength | Select when interfacing directly with 5 V TTL outputs without level shifters |
| SN74HC390N | DIP-16 package (PDIP), wider body, through-hole mounting; otherwise identical electrical specs | Used in prototyping, educational kits, or legacy PCBs requiring through-hole assembly | Choose only for hand-soldered development or repair of older boards - not for automated SMT production |
Compared with 74HCT390PW,118, the 74HC390PW,112 offers higher noise immunity and lower static current but requires CMOS-level input drive; versus SN74HC390N, it delivers superior thermal performance and board-area savings in modern SMT designs.
Availability
74HC390PW,112 is available at Aetrix Electronics and suitable for industrial control panels, digital instrumentation displays, legacy equipment timing circuits, and frequency division in signal generators requiring stable component supply across extended temperature ranges.
Supply support for 74HC390PW,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.
The 74HC390 belongs to Nexperia's HC logic family, designed specifically for low-power, high-noise-immunity 5 V digital systems requiring precise timing, predictable propagation delays, and long-term supply stability.
FAQ
Can the 74HC390PW,112 operate at 3.3 V?
No. The 74HC390PW,112 is specified only for 4.5 V to 5.5 V operation per its recommended conditions table. At 3.3 V, VIH exceeds the supply rail, preventing reliable HIGH-level recognition. For 3.3 V systems, consider the 74LVC390 or level-shifting circuitry.
What is the difference between BCD and bi-quinary configuration?
In BCD mode, 1Q0 drives 1CP1 to produce outputs 0–9 in natural binary order (0000–1001). In bi-quinary mode, 1Q3 drives 1CP0, yielding outputs where Q0 toggles every five counts (0000, 0100, 0010, 0110, 0001, 1000, 1100, 1010, 1110, 1001), supporting error-detecting decimal encoders.
Is the master reset synchronous or asynchronous?
The master reset (1MR and 2MR) is fully asynchronous: a HIGH applied to either input immediately forces all associated Q0–Q3 outputs LOW, overriding ongoing clock activity without waiting for the next clock edge - critical for fail-safe system initialization.
Does the 74HC390PW,112 require external pull-up resistors on outputs?
No. Outputs are push-pull CMOS with VOH ≥ 3.98 V and VOL ≤ 0.26 V at 4 mA load, eliminating need for pull-ups in standard 5 V logic interfacing. Pull-ups are only required if driving open-collector inputs or exceeding 4 mA sink/source capability.
74HC390PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Counter, Decade
- Direction:
- Up
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Reset:
- Asynchronous
- Timing:
- -
- Count Rate:
- 71 MHz
- Trigger Type:
- Negative Edge
- Voltage - Supply:
- 2 V ~ 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC390PW,112 FAQ
1.How can I place an order for 74HC390PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC390PW,112 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74HC390PW,112 reliable?
The price and inventory of 74HC390PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC390PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC390PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC390PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC390PW,112?
74HC390PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC390PW,112 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74HC390PW,112?
For technical support, including 74HC390PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC390PW,112 requirements.
6.How does Aetrix verify that 74HC390PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC390PW,112 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74HC390PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC390PW,112?
All 74HC390PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC390PW,112, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74HC390PW,112 part is unused and in its original packaging.
Return procedure for 74HC390PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC390PW,112 Tags
-
74HC393BQ,115
Nexperia USA Inc.
-
SN74LV8154PWR
Texas Instruments
-
MC14516BDR2G
onsemi
-
MC14020BDR2G
onsemi
-
MC100EP32DTR2G
onsemi
-
MC100EP016AMNG
onsemi
-
MC100EP016AFAG
onsemi
-
SN74LV163ADR
Texas Instruments
-
SN74LV163APWR
Texas Instruments
-
SN74HC393DR
Texas Instruments
-
SN74HC161DR
Texas Instruments
-
SN74HC163DR
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
