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Nexperia USA Inc. 74HC40103PW,112
- Part No.:
- 74HC40103PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC40103PW,112.pdf
- Description:
- IC BINARY COUNTER 8-BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
74HC40103PW,112 from Nexperia is an 8-bit synchronous binary down counter with asynchronous master reset (MR), synchronous/asynchronous preset (PE/PL), terminal enable (TE), and active-low terminal count (TC) output. It operates across 2.0 V to 6.0 V supply, delivers ≤60 ns propagation delay at 4.5 V, supports cascading via TE/TC, and functions over −40 °C to +125 °C - used in programmable timers and divide-by-N clock generation.
For engineers reviewing the 74HC40103PW,112 datasheet, 74HC40103PW,112 pinout, 74HC40103PW,112 application, or 74HC40103PW,112 equivalent, key selection criteria include its dual-mode preset capability (synchronous PE and asynchronous PL), guaranteed TC pulse width at zero count, wide VCC tolerance, TSSOP16 thermal performance, and compatibility with 74HC logic families in timing-critical embedded control loops.
Technical Context
The 74HC40103PW,112 implements a fully synchronous 8-bit decrementing counter with independent control paths: MR forces count = 255 asynchronously; PL loads jam inputs P0–P7 asynchronously; PE enables synchronous load on next CP rising edge; TE gates counting but does not affect preset or reset. All control inputs are active-low and CMOS-compatible.
Its terminal count (TC) asserts LOW for one full clock period upon reaching zero while TE = LOW, enabling precise timeout detection and ripple-cascaded multi-stage counting. The device uses standard HC-series silicon with clamp diodes on all inputs, supporting interfacing to voltages exceeding VCC when current-limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-bit synchronous binary down counter with asynchronous clear, synchronous/asynchronous parallel load, and active-low terminal count output |
| Supply Voltage Range | 2.0 V to 6.0 V - ensures interoperability with mixed-voltage 3.3 V and 5 V logic systems without level shifters |
| Propagation Delay (tpd) | ≤60 ns at VCC = 4.5 V - enables reliable operation up to 15 MHz maximum clock frequency in industrial timing applications |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive, motor control, and industrial PLC environments |
| Package | TSSOP16 (SOT403-1), 4.4 mm body width - surface-mount compatible with high-density PCB layouts and automated assembly |
| Input/Output Logic | CMOS-level compatible with VIH ≥ 3.15 V / VIL ≤ 1.35 V at VCC = 4.5 V - provides robust noise immunity (>1.8 V DC noise margin) |
| Power Dissipation | ICC ≤ 160 μA at VCC = 6.0 V, Tamb = +125 °C - supports low-quiescent-power battery-backed timer subsystems |
Pinout & Package
TSSOP16 package (SOT403-1): 16-pin thin shrink small outline, 0.65 mm pitch, 4.4 mm body width, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CP | Clock input | Rising-edge triggered; synchronizes all counter state changes and preset operations |
| 2 MR | Asynchronous master reset | Active LOW - forces count to 255 regardless of CP, TE, PE, or PL state |
| 3 TE | Terminal enable | Active LOW - enables TC assertion at zero count and permits counting; HIGH inhibits count decrement |
| 4–7, 10–13 P0–P7 | Jam data inputs | Parallel 8-bit binary word (P0 = LSB, P7 = MSB); loaded synchronously (PE = LOW) or asynchronously (PL = LOW) |
| 8 GND | Ground reference | 0 V return path for all internal logic and output drivers |
| 9 PL | Asynchronous preset enable | Active LOW - forces P0–P7 into counter immediately, overriding CP, TE, and PE |
| 14 TC | Terminal count output | Active LOW open-drain–compatible output; pulses LOW for one CP period when count = 0 and TE = LOW |
| 15 PE | Synchronous preset enable | Active LOW - enables loading of P0–P7 on next CP rising edge, independent of TE state |
| 16 VCC | Positive supply | 2.0 V to 6.0 V power rail; powers all internal logic and output stages |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode preset | Supports both synchronous (PE-triggered) and asynchronous (PL-triggered) parallel load - enables flexible initialization in real-time interrupt handlers and boot-up sequences |
| Cascadable architecture | TE input and TC output allow synchronous or ripple-mode expansion to 16-bit+ counters without external glue logic |
| Wide voltage operation | 2.0 V to 6.0 V supply range - eliminates need for separate voltage regulators in mixed-signal systems with 3.3 V microcontrollers and 5 V peripherals |
| High noise immunity | Typical VIH/VIL margins >1.8 V at 4.5 V - suppresses false triggering from EMI in motor drive and power conversion environments |
| ESD robustness | HBM >2000 V, CDM >1000 V - withstands handling and board-level assembly without special ESD precautions |
Applications
| Programmable Timer | Divide-by-N Counter |
|---|---|
|
Use Scenario: Generating precise time-out intervals in microcontroller peripheral supervision or watchdog reset circuits. IC Role / Device Role / Timing Role: Down-counts from a preset value (e.g., 255) to zero; TC pulse triggers system reset or interrupt. Use Value: Enables deterministic, software-independent timeout windows with sub-microsecond jitter due to synchronous clocking and fixed TC pulse width. |
Use Scenario: Reducing high-frequency clock signals (e.g., 10 MHz crystal) to lower-rate system clocks or baud rate generators. IC Role / Device Role / Timing Role: Configured as modulo-(N+1) divider using TC feedback to reload P0–P7 on zero count. Use Value: Delivers exact integer division ratios (e.g., ÷256) with no accumulated phase error across cycles - critical for UART timing and PWM synchronization. |
| Interrupt Timer | Cycle/Program Counter |
|
Use Scenario: Managing periodic task scheduling in real-time OS kernels or firmware state machines. IC Role / Device Role / Timing Role: Counts down from a reload value set by host processor; TC asserts interrupt request to CPU. Use Value: Offloads timing overhead from CPU, reduces ISR latency variability, and supports multiple independent timing channels via cascading. |
Use Scenario: Tracking instruction cycles in FPGA-based soft-core processors or microcoded controllers. IC Role / Device Role / Timing Role: Synchronously decrements per instruction fetch or pipeline stage; TC flags end-of-sequence or loop termination. Use Value: Provides deterministic cycle counting with glitch-free zero-crossing detection - essential for debug trace and instruction pipelining validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit synchronous down counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC40103D,118 | SO16 package (SOT109-1), wider body (3.9 mm), higher thermal resistance (12.4 mW/K derating above 110 °C) | Better suited for through-hole prototyping or legacy PCBs with SOIC footprints; less dense than TSSOP | Select for manual assembly, thermal margin in low-airflow enclosures, or compatibility with existing SO16 layouts |
| SN74HC40103N | PDIP-16 package, −40 °C to +85 °C rating, no automotive qualification | Limited to commercial-grade applications; incompatible with reflow soldering and high-temp environments | Choose only for lab evaluation or non-industrial designs where cost and hand-soldering priority outweigh reliability requirements |
Compared with 74HC40103PW,112, the SO16 variant offers easier thermal management but larger footprint, while the PDIP version sacrifices temperature range and manufacturability - making the TSSOP16 optimal for space-constrained, thermally demanding, and production-ready designs.
Availability
74HC40103PW,112 is available at Aetrix Electronics and suitable for programmable timers, divide-by-N clock dividers, interrupt timing circuits, and cycle counters requiring stable component supply across automotive, industrial control, and embedded instrumentation programs.
Supply support for 74HC40103PW,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 automotive, industrial, and consumer electronics.
The 74HC40103 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital timing and control in resource-constrained embedded systems operating across extended temperature ranges.
FAQ
What is the minimum clock pulse width required for reliable operation?
The minimum CP pulse width (tW) is 9 ns at VCC = 6.0 V and Tamb = +125 °C, increasing to 75 ns at VCC = 2.0 V and same temperature. This ensures setup/hold timing margins for internal flip-flop sampling and guarantees monotonic state transitions without metastability under worst-case voltage and temperature conditions.
Can TC be used directly to trigger a microcontroller interrupt?
Yes - TC is an active-low, CMOS-compatible output with VOL ≤ 0.26 V at IO = 5.2 mA and VCC = 6.0 V, meeting standard GPIO interrupt thresholds. Its one-clock-period pulse width is sufficient for edge-triggered interrupts; no external debouncing is needed due to synchronous generation and glitch-free zero detection.
How does asynchronous preset (PL) interact with ongoing counting?
PL overrides all other controls: when PL goes LOW, P0–P7 is forced into the counter immediately, irrespective of CP state, TE level, or PE status. Counting resumes from the loaded value on the next CP rising edge if TE = LOW, with no race condition or intermediate states - verified by functional table and timing diagrams in Rev. 6 datasheet.
Is the 74HC40103PW,112 pin-compatible with older 74LS or 74ACT series counters?
No - it is not pin-compatible with 74LS40103 or 74ACT40103 due to differing pin assignments (e.g., LS40103 places TC at pin 12, while HC40103 places it at pin 14). Electrical compatibility exists (TTL-input-compatible VIH/VIL), but PCB layout and schematic symbol must match the HC40103-specific pinout defined in SOT403-1.
74HC40103PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Binary Counter
- Direction:
- Down
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Reset:
- Asynchronous
- Timing:
- Synchronous
- Count Rate:
- 32 MHz
- Trigger Type:
- Positive Edge
- Voltage - Supply:
- 2 V ~ 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC40103PW,112 FAQ
1.How can I place an order for 74HC40103PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC40103PW,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 74HC40103PW,112 reliable?
The price and inventory of 74HC40103PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC40103PW,112 is usually 5 days.
3.What payment methods are accepted for 74HC40103PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC40103PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC40103PW,112?
74HC40103PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC40103PW,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 74HC40103PW,112?
For technical support, including 74HC40103PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC40103PW,112 requirements.
6.How does Aetrix verify that 74HC40103PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HC40103PW,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 74HC40103PW,112 meets industry standards.
7.What is the process for return or replacement of 74HC40103PW,112?
All 74HC40103PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC40103PW,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 74HC40103PW,112 part is unused and in its original packaging.
Return procedure for 74HC40103PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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