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Home > Products > Integrated Circuits (ICs) > Logic > Counters, Dividers

Nexperia USA Inc. 74HC40103PW,118

Name: 74HC40103PW,118
Brand: Nexperia USA Inc.
SKU: 74HC40103PW,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC40103PW,118

Manufacturer:: Nexperia USA Inc.

Category:: Counters, Dividers

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74HC40103PW,118.pdf

Description:: IC BINARY COUNTER 8-BIT 16TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74HC40103PW,118 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, and supports cascading in synchronous or ripple mode for extended counting sequences. Used in programmable timers and divide-by-N clock generation where precise binary countdown and zero-detection are required.

For engineers reviewing the 74HC40103PW,118 datasheet, 74HC40103PW,118 pinout, 74HC40103PW,118 application, or 74HC40103PW,118 equivalent, this device serves as a drop-in replacement for legacy 74HC40103 variants in industrial timing, interrupt control, and cycle-counting circuits requiring wide V_CC range, low power, and robust noise immunity.

Technical Context

The 74HC40103PW,118 implements a fully synchronous 8-bit decrementer with edge-triggered clock (CP) and dual preset paths: synchronous (via PE) and asynchronous (via PL). Its counter state transitions on LOW-to-HIGH CP edges only when TE is LOW and MR is HIGH.

Terminal count (TC) asserts LOW for one full clock period upon reaching zero count, enabling precise timeout detection. Cascading is supported via TE input and TC output - TE can gate CP propagation to downstream counters, while TC provides ripple-carry or synchronous load synchronization signals.

Key Specifications

Parameter	Value and Actual Design Meaning
Counter width	8-bit binary down counter (0 to 255 decimal range)
Supply voltage (V_CC)	2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V logic systems without level shifters
Max clock frequency	35 MHz at V_CC = 6.0 V - supports high-speed timing applications up to 28.6 ns minimum clock period
Propagation delay (t_pd)	28 ns typical at V_CC = 6.0 V (CP to TC) - ensures deterministic timing for critical interrupt or timeout windows
Operating temperature	-40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and harsh-environment embedded use
Power dissipation	≤80 μA ICC at V_CC = 6.0 V - CMOS efficiency enables battery-backed or low-power timer subsystems
Input clamp diodes	Integrated - allows safe interfacing to voltages exceeding V_CC using external current-limiting resistors

Pinout & Package

TSSOP16 package (SOT403-1): 4.4 mm body width, 0.65 mm lead pitch, 16-pin thin shrink outline optimized for high-density PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1 CP	Clock input	LOW-to-HIGH edge-triggered; controls all synchronous state changes including count decrement and synchronous preset
2 MR	Asynchronous master reset	Active LOW - forces counter to maximum value (255) regardless of CP, TE, or PL state
3 TE	Terminal enable	Active LOW - enables counting and TC assertion; HIGH inhibits count change and holds TC HIGH
4–7, 10–13 P0–P7	Jam inputs (LSB to MSB)	8-bit parallel data bus; loaded synchronously (PE LOW) or asynchronously (PL LOW)
8 GND	Ground reference	0 V return path for all internal logic and I/O; must be low-impedance for noise immunity
9 PL	Asynchronous preset enable	Active LOW - loads P0–P7 immediately, overriding CP, TE, and PE states
14 TC	Terminal count output	Active LOW open-drain signal asserted for one full CP period when count reaches zero and TE = LOW
15 PE	Synchronous preset enable	Active LOW - loads P0–P7 on next valid CP edge, subject to TE and MR status
16 V_CC	Positive supply	2.0 V to 6.0 V operation; decoupling capacitor required near pin for stable switching performance

Key Features

Feature	Design Value
Wide V_CC range	2.0 V to 6.0 V - eliminates need for separate voltage rails in mixed-supply systems
Asynchronous & synchronous preset	Dual load paths (PL and PE) support both immediate initialization and clock-synchronized updates
Cascadable architecture	TE input and TC output enable multi-stage counters with synchronized or ripple carry propagation
High noise immunity	CMOS input thresholds (VIH ≥ 70% V_CC, VIL ≤ 30% V_CC) reject transient coupling in noisy industrial environments
ESD robustness	HBM >2000 V, CDM >1000 V - withstands handling and board-level ESD events without latch-up

Applications

Programmable Timer

Divide-by-N Counter

Use Scenario: Generating fixed-duration time-out pulses in microcontroller watchdog or motor stall detection circuits.

IC Role / Device Role / Timing Role: Down-counter initialized to N−1; TC triggers reset or interrupt when reaching zero after N clock cycles.

Use Value: Enables precise, software-independent timing with single-cycle resolution and no CPU overhead.

Use Scenario: Reducing high-frequency system clocks (e.g., 10 MHz) to lower-rate control signals (e.g., 10 kHz).

IC Role / Device Role / Timing Role: Configured as modulo-(N+1) divider: preset to N, count down to zero, then reload via TC-driven preset.

Use Value: Delivers exact integer division ratios without PLL complexity or jitter accumulation.

Interrupt Timer

Instruction Cycle Counter

Use Scenario: Providing periodic hardware interrupts to a CPU every M instruction cycles in real-time OS schedulers.

IC Role / Device Role / Timing Role: Synchronously loaded with M−1 and decremented per instruction pulse; TC asserts interrupt request.

Use Value: Offloads timing management from firmware, ensuring deterministic interrupt latency and jitter-free scheduling.

Use Scenario: Monitoring execution duration of firmware routines by counting instruction cycles during test or debug phases.

IC Role / Device Role / Timing Role: Preset before routine start, halted on completion; final count read via parallel outputs P0–P7.

Use Value: Provides cycle-accurate profiling without instrumentation code or debugger dependency.

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); 3.9 mm body width; higher thermal resistance (12.4 mW/K derating above 110 °C)	Better suited for through-hole prototyping or legacy board designs with SO footprint compatibility	Select for manual assembly, thermal margin above 110 °C, or compatibility with existing SO16 footprints.
74HCT40103PW,118	TTL-compatible input thresholds (VIH = 2.0 V min); identical TSSOP16 package and pinout	Required when interfacing directly with 5 V TTL logic without level translation	Choose only when driving from legacy 5 V TTL sources; otherwise, standard 74HC40103PW offers wider V_CC flexibility.

Compared with 74HC40103D,118, the 74HC40103PW,118 offers 15% smaller PCB area and improved thermal performance below 91 °C; versus 74HCT40103PW,118, it provides broader supply compatibility but requires compatible CMOS-level drivers.

Availability

74HC40103PW,118 is available at Aetrix Electronics and suitable for programmable timers, divide-by-N counters, interrupt timers, and instruction cycle counters requiring stable component supply across automotive, industrial automation, and embedded control programs.

Supply support for 74HC40103PW,118 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 discrete components with focus on reliability, efficiency, and manufacturability.

The 74HC40103 belongs to Nexperia's 74HC logic family - designed for low-power, high-noise-immunity digital control in industrial, automotive, and consumer applications requiring robust timing and counting functions.

FAQ

What is the function of the TE (terminal enable) input?

The TE input is an active-LOW control that enables or disables counting and terminal count (TC) assertion. When TE is HIGH, the counter holds its current value and TC remains HIGH regardless of clock or preset activity. When TE is LOW, normal down-counting proceeds and TC goes LOW for one clock period upon reaching zero - making TE essential for gating counter operation in multi-stage or conditional timing sequences.

Can the 74HC40103PW,118 be used as an up-counter?

No - the 74HC40103PW,118 is exclusively a synchronous binary down counter. Its internal architecture decrements on each valid clock edge and has no provision for incrementing, carry-out generation for upward counting, or UP/DOWN mode selection. For up-counting functionality, consider the 74HC40102 or dedicated up/down counter ICs like the 74HC193.

How does the asynchronous preset (PL) interact with the master reset (MR)?

Both PL and MR are asynchronous active-LOW inputs with equal priority: asserting either forces the counter to load data from P0–P7 (PL) or clear to 255 (MR), independent of CP, TE, or PE. If both are asserted simultaneously, MR takes precedence per functional table - the counter clears to 255, not the jam value. This hierarchy ensures fail-safe reset behavior in safety-critical timing paths.

Is external pull-up required on the TC output?

Yes - TC is an open-drain output and requires an external pull-up resistor to V_CC to generate a valid HIGH level. Typical values range from 4.7 kΩ to 10 kΩ depending on capacitive load and rise-time requirements. Without pull-up, TC remains floating when inactive (HIGH state undefined), risking logic misinterpretation in downstream circuits.

74HC40103PW,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HC

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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,118 FAQ

1.How can I place an order for 74HC40103PW,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC40103PW,118 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,118 reliable?

The price and inventory of 74HC40103PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC40103PW,118 is usually 5 days.

3.What payment methods are accepted for 74HC40103PW,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC40103PW,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC40103PW,118?

74HC40103PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC40103PW,118 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,118?

For technical support, including 74HC40103PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC40103PW,118 requirements.

6.How does Aetrix verify that 74HC40103PW,118 is sourced from the original manufacturer or authorized distributors?

All 74HC40103PW,118 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,118 meets industry standards.

7.What is the process for return or replacement of 74HC40103PW,118?

All 74HC40103PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC40103PW,118, 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,118 part is unused and in its original packaging.

Return procedure for 74HC40103PW,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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