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STMicroelectronics M74HC4040RM13TR
- Part No.:
- M74HC4040RM13TR
- Manufacturer:
- STMicroelectronics
- Category:
- Counters, Dividers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M74HC4040RM13TR.pdf
- Description:
- IC BINARY COUNTER 12-BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
M74HC4040RM13TR from STMicroelectronics is a high-speed CMOS 12-stage binary ripple counter with edge-triggered clock input, asynchronous clear, and 12 parallel outputs (Q1–Q12). It operates from 2V to 6V, delivers 70 MHz max clock frequency at 6V, and features symmetrical 4 mA output drive capability. Used in frequency division (1/4096), timing control, and event counting circuits in industrial logic systems.
For engineers reviewing the M74HC4040RM13TR datasheet, M74HC4040RM13TR pinout, M74HC4040RM13TR application, or M74HC4040RM13TR equivalent, key selection criteria include propagation delay matching (tPLH/tPHL ≈ 4–13 ns), low ICC (≤4 µA typ.), wide VCC range (2–6 V), and TSSOP-16 package compatibility for space-constrained PCB layouts.
Technical Context
The M74HC4040RM13TR implements a cascaded chain of 12 D-type flip-flops with asynchronous active-high CLEAR and positive-edge-triggered CLOCK. Each stage divides by two, yielding Q12 = fIN/4096. No internal synchronization or preset capability is provided - it is a pure ripple counter with cumulative propagation delay.
Input protection diodes and silicon gate C2MOS technology enable high noise immunity (VNIH/VNIL ≥ 28% VCC), rail-to-rail output swing, and operation across –55°C to +125°C. All inputs tolerate –0.5 V to VCC + 0.5 V, and outputs drive ±4 mA minimum under defined load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (74HC), pin/function compatible with 74LS4040 but with higher noise immunity and wider supply range |
| Max Clock Frequency | 70 MHz (typ.) at VCC = 6 V - enables high-resolution timing down to ~14 ns per clock cycle |
| Supply Voltage Range | 2 V to 6 V - supports dual-supply systems and battery-powered logic without level shifting |
| Quiescent Current | 4 µA (max) at TA = 25°C - suitable for ultra-low-power standby modes in always-on counters |
| Output Drive | ±4 mA (min) - sufficient to directly drive multiple HC/HCT inputs or small capacitive loads (<50 pF) |
| Propagation Delay (CLOCK→Q1) | 13 ns (max) at VCC = 6 V - determines worst-case ripple-through latency for Q12 (≤156 ns) |
| Input Noise Immunity | ≥28% VCC (min) - rejects common-mode transients up to 1.68 V at 6 V supply |
Pinout & Package
TSSOP-16 (Thin Shrink Small Outline Package), 4.9 × 6.4 mm body, 0.65 mm pitch, 16-pin surface-mount. RoHS-compliant, moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 9, 12, 13, 14, 15 | Q1–Q12 Outputs | Asynchronous ripple counter outputs; Q1 = fIN/2, Q12 = fIN/4096; no bus-hold or weak pull-up |
| 10 | CLOCK Input | Positive-edge-triggered; requires clean transition (tr/tf ≤ 400 ns at 6 V); no internal Schmitt trigger |
| 11 | CLEAR Input | Asynchronous active-high reset; forces all Qn = LOW regardless of clock state |
| 8 | GND | Dedicated ground reference; must be low-inductance connection to minimize switching noise coupling |
| 16 | VCC | Primary power supply; decoupling capacitor (100 nF) required within 5 mm of pin for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| 12-stage binary division | Provides exact 4096:1 frequency reduction with deterministic phase relationship between stages |
| Asynchronous clear | Enables immediate counter reset independent of clock timing - critical for system initialization and fault recovery |
| Rail-to-rail output swing | VOH ≥ 5.9 V and VOL ≤ 0.18 V at VCC = 6 V/IO = 5.2 mA - ensures robust interfacing with downstream HC, HCT, or TTL inputs |
| Low dynamic power | CPD = 34 pF - limits switching current to <1 mA at 10 MHz/6 V, reducing thermal load in dense logic arrays |
| Extended temperature range | Specified from –55°C to +125°C - qualified for automotive under-hood and industrial control cabinet use |
Applications
| Industrial Timer Module | Power Supply Sequencing Controller |
|---|---|
Use Scenario: Generating precise 1-second intervals from a 4.096 kHz crystal oscillator for PLC real-time clocks. IC Role / Device Role / Timing Role: Primary frequency divider delivering Q12 as 1 Hz timing signal with deterministic jitter accumulation. Use Value: Eliminates need for external prescalers or microcontroller-based timing - reduces BOM count and firmware complexity. | Use Scenario: Controlling power-up sequence of multi-rail FPGA systems requiring staggered 3.3 V, 2.5 V, and 1.2 V enable signals. IC Role / Device Role / Timing Role: Ripple counter generating delayed enable pulses via decoded Q outputs (e.g., Q3, Q5, Q8). Use Value: Provides fixed, repeatable delay intervals without RC timing drift or software dependency. |
| Motor Index Pulse Divider | Legacy Bus Address Decoder |
Use Scenario: Converting high-frequency encoder index pulses (e.g., 100 kHz) into lower-rate position latch triggers for stepper motor homing. IC Role / Device Role / Timing Role: Asynchronous counter dividing encoder Z-phase pulses by 256 or 1024 for mechanical alignment verification. Use Value: Maintains deterministic division ratio across voltage/temperature - avoids missed latches due to timing skew. | Use Scenario: Decoding 16-bit address bus lines to generate chip-select signals for memory-mapped peripherals in 8051-based controllers. IC Role / Device Role / Timing Role: Static address decoder using Q outputs as decoded chip-select asserts (e.g., Q0–Q3 for 4× peripheral select). Use Value: Reduces gate count vs. discrete NAND-based decoding - improves layout density and signal integrity on legacy 5 V boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-stage binary counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC4040PWR | Same logic function, identical AC/DC specs; differs in package (TSSOP-16 vs. PW = TSSOP-16), same pinout | No functional difference; TI version has identical timing, drive, and voltage specs | Select based on distributor availability and long-term sourcing preference - not a drop-in replacement due to different orderable part marking |
| CD74HC4040M96 | Same logic and electrical specs; package is SOIC-16 (wide-body, 3.9 mm width), 1.27 mm pitch | Requires PCB footprint change; higher parasitic inductance limits max fCLK to ~60 MHz in noisy environments | Prefer for through-hole prototyping or legacy SOIC-compatible designs where TSSOP reflow is unavailable |
Compared with SN74HC4040PWR and CD74HC4040M96, the M74HC4040RM13TR offers identical counter functionality but is optimized for high-density SMT assembly with its 0.65 mm pitch TSSOP-16, enabling tighter routing and lower trace inductance for >50 MHz operation.
Availability
M74HC4040RM13TR is available at Aetrix Electronics and suitable for industrial timer modules, power supply sequencing controllers, motor index pulse dividers, and legacy bus address decoders requiring stable component supply and extended temperature support.
Supply support for M74HC4040RM13TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The M74HC4040RM13TR belongs to ST's legacy HC logic family, engineered for interoperability with 74-series TTL while delivering CMOS advantages: low power, wide supply range, and high noise immunity in industrial control and instrumentation.
FAQ
Is the M74HC4040RM13TR pin-compatible with the 74LS4040?
Yes - it uses identical pinout and logic function (asynchronous clear, positive-edge clock, Q1–Q12 outputs), but operates over 2–6 V (vs. 4.75–5.25 V for LS) and draws significantly less current. Level-shifting is unnecessary when replacing 74LS4040 in 5 V systems, though propagation delays differ.
Can the CLEAR input be used synchronously?
No - CLEAR is strictly asynchronous and overrides clock activity immediately. There is no synchronous reset mode. To achieve synchronized reset behavior, external gating of CLOCK with CLEAR (e.g., AND gate) is required, adding one gate delay.
What is the maximum capacitive load this device can drive reliably?
At VCC = 6 V and fCLK = 10 MHz, the device maintains specified timing with CL ≤ 50 pF (per AC test condition). Driving >50 pF risks exceeding tPLH/tPHL limits and increasing ICC; for >100 pF loads, buffer amplification is recommended.
Does the M74HC4040RM13TR support hot insertion or live insertion?
No - it lacks Ioff protection or power-off isolation. Applying voltage to inputs while VCC = 0 V may forward-bias internal protection diodes, causing excessive current flow. Power sequencing must ensure VCC is stable before applying any input signals.
M74HC4040RM13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Binary Counter
- Direction:
- Up
- Number of Elements:
- 1
- Number of Bits per Element:
- 12
- Reset:
- Asynchronous
- Timing:
- -
- Count Rate:
- 70 MHz
- Trigger Type:
- Negative Edge
- Voltage - Supply:
- 2 V ~ 6 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
M74HC4040RM13TR FAQ
1.How can I place an order for M74HC4040RM13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC4040RM13TR 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 M74HC4040RM13TR reliable?
The price and inventory of M74HC4040RM13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC4040RM13TR is usually 5 days.
3.What payment methods are accepted for M74HC4040RM13TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC4040RM13TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC4040RM13TR?
M74HC4040RM13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC4040RM13TR 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 M74HC4040RM13TR?
For technical support, including M74HC4040RM13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC4040RM13TR requirements.
6.How does Aetrix verify that M74HC4040RM13TR is sourced from the original manufacturer or authorized distributors?
All M74HC4040RM13TR 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 M74HC4040RM13TR meets industry standards.
7.What is the process for return or replacement of M74HC4040RM13TR?
All M74HC4040RM13TR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC4040RM13TR, 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 M74HC4040RM13TR part is unused and in its original packaging.
Return procedure for M74HC4040RM13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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