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Nexperia USA Inc. 74HC590PW-Q100J
- Part No.:
- 74HC590PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- -
- Datasheet:
-
74HC590PW-Q100J.pdf
- Description:
- 74HC590PW-Q100/SOT403/TSSOP16
- Quantity:
- Payment:
- Shipping:
Inventory:1,410
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Product details
Overview
74HC590PW-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit binary counter with independent counter and storage register clocks (CPC, CPR), 3-state parallel outputs (Q0–Q7), master reset (MRC), count enable (CE), and ripple carry output (RCO) for cascading. It operates from 2.0 V to 6.0 V across –40 °C to +125 °C and is used in automotive body control modules for odometer pulse counting and gear position encoding.
For engineers reviewing the 74HC590PW-Q100 datasheet, 74HC590PW-Q100 pinout, 74HC590PW-Q100 application, or 74HC590PW-Q100 equivalent, key selection criteria include independent clock domains for counter/register synchronization, RCO-driven cascade timing, 3-state bus isolation under OE control, and automotive-grade thermal and ESD robustness (HBM >2000 V, CDM >1000 V).
Technical Context
The device implements two synchronous logic stages: an 8-bit binary counter with active-low master reset (MRC) and count enable (CE), and a separate 8-bit storage register triggered by positive-edge CPR. Counter state advances on CPC rising edge only when CE is low; register loads counter value on CPR rising edge - enabling one-cycle pipeline delay between count and output latching.
RCO is active-low and asserts when all eight internal counter bits are high (Q0′·Q1′·…·Q7′), supporting synchronous or ripple-cascaded multi-stage counting. Output enable (OE) controls 3-state drive of Q0–Q7, while input clamp diodes allow safe interfacing to voltages beyond VCC using current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-bit binary counter with output register and 3-state bus drivers |
| Supply Voltage | 2.0 V to 6.0 V - supports dual-rail systems and legacy 5 V automotive buses |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood applications |
| Max Clock Frequency | 61 MHz at VCC = 6.0 V - enables high-speed pulse accumulation in engine control units |
| Propagation Delay | 14 ns (CPR to Qn, VCC = 6.0 V) - ensures tight timing alignment between register load and output assertion |
| Output Drive | ±35 mA per Qn pin - drives standard TTL/CMOS loads without external buffers |
| Ripple Carry Output | Active-low RCO - provides synchronous cascade trigger with deterministic setup/hold to next stage CE |
Pinout & Package
TSSOP16 package (SOT403-1), 4.4 mm body width, 0.65 mm lead pitch, surface-mount compatible with automated assembly and automotive thermal cycling requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 15 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q0 | 3-state parallel data outputs - isolated when OE is high; synchronized to CPR edge |
| 8 | GND | Ground reference for all logic and power domains - requires low-inductance PCB return path |
| 9 | RCO | Ripple carry output (active LOW) - signals terminal count (255) for cascading to next counter's CE |
| 10 | MRC | Master reset counter (active LOW) - asynchronously clears counter to zero, independent of clocks |
| 11 | CPC | Counter clock input (active HIGH) - advances count on rising edge when CE = LOW |
| 12 | CE | Count enable (active LOW) - gates CPC; prevents spurious increments during bus contention |
| 13 | CPR | Register clock input (active HIGH) - latches current counter value into output register on rising edge |
| 14 | OE | Output enable (active LOW) - enables/disables Q0–Q7 drivers; critical for shared-bus arbitration |
| 16 | VCC | Supply voltage (2.0–6.0 V) - decoupling capacitor required within 5 mm of pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Independent counter/register clocks | Enables deterministic pipeline delay: counter updates on CPC, register captures result on next CPR - avoids metastability in multi-clock domain systems |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at +125 °C ambient - suitable for engine control, transmission, and ADAS sensor interface modules |
| Input clamp diodes | Permits direct connection to 12 V vehicle battery rails via series resistor - eliminates need for external level-shifting circuitry |
| 3-state output control | OE-driven bus isolation allows multiple counters to share common data lines without contention - essential for modular dashboard instrumentation |
| Ripple carry output logic | RCO = Q0′·Q1′·…·Q7′ provides glitch-free cascade signal - eliminates race conditions when chaining counters for 16-/24-bit resolution |
Applications
| Odometer Pulse Accumulation | Transmission Gear Position Encoding |
|---|---|
Use Scenario: Counts wheel speed sensor pulses over time to compute distance traveled in digital odometers. IC Role / Device Role / Timing Role: 8-bit counter accumulates pulses; register holds stable value for microcontroller readout; RCO triggers overflow interrupt or cascades to higher byte. Use Value: Eliminates software polling overhead; hardware-based count accuracy unaffected by MCU interrupt latency or task scheduling jitter. | Use Scenario: Converts mechanical gear selector switch states into synchronized digital codes for transmission control units. IC Role / Device Role / Timing Role: Counter tracks switch bounce transitions; register captures debounced state on CPR edge; OE isolates bus during reconfiguration. Use Value: Reduces GPIO resource usage on main MCU; ensures atomic read of gear position even during rapid shifting sequences. |
| Engine RPM Signal Division | Body Control Module Event Sequencing |
Use Scenario: Divides crankshaft position sensor pulses to generate lower-frequency tachometer or fuel injection timing signals. IC Role / Device Role / Timing Role: Counter divides input frequency by programmable modulus (e.g., ÷256); register outputs stable divided value; MRC resets on ignition cycle. Use Value: Offloads high-frequency timing tasks from main ECU; maintains precise division ratio independent of software execution timing. | Use Scenario: Sequences timed events such as door lock actuation, mirror folding, or interior lighting fade in response to CAN command triggers. IC Role / Device Role / Timing Role: Counter acts as programmable timer; register holds elapsed count; RCO signals timeout completion to microcontroller interrupt pin. Use Value: Enables deterministic, jitter-free timing without consuming CPU cycles or requiring dedicated timer peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit counter-with-register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC590PWR | Industrial grade (–40 °C to +85 °C), same pinout and logic, no AEC-Q100 qualification | Not approved for automotive under-hood use; limited to cabin electronics or non-safety-critical modules | Select when cost sensitivity outweighs automotive qualification requirement and ambient temperature stays ≤85 °C |
| 74LV590PW,118 | Lower voltage range (1.0–5.5 V), higher max fmax (80 MHz at 5 V), identical AEC-Q100 Grade 1 rating | Better suited for 3.3 V systems with tighter timing budgets; incompatible with 6 V supply rails | Choose for next-gen 3.3 V automotive ECUs where supply headroom is constrained and speed margin is critical |
Compared with SN74HC590PWR, the 74HC590PW-Q100 adds guaranteed operation up to +125 °C and automotive qualification - essential for powertrain integration. Against 74LV590PW,118, it trades 6 V tolerance for broader legacy system compatibility but sacrifices peak speed in 3.3 V designs.
Availability
74HC590PW-Q100 is available at Aetrix Electronics and suitable for automotive body control, engine management, and transmission control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC590PW-Q100 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 focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HC590-Q100 belongs to Nexperia's automotive-qualified HC logic family, designed specifically for robust, low-power counting and data latching in harsh-temperature automotive subsystems where reliability and signal integrity are mission-critical.
FAQ
What is the function of the RCO pin and how is it used in cascaded configurations?
RCO is an active-low ripple carry output that asserts when the internal 8-bit counter reaches 255 (all bits high). In cascaded setups, RCO of the first stage connects to CE of the second stage to enable counting only after the first counter overflows - creating a synchronous 16-bit chain. For higher resolutions, RCO can drive CPC of the next stage to implement ripple-cascaded timing with minimal external logic.
How does the independent CPR and CPC clock architecture improve system timing reliability?
The separation of counter clock (CPC) and register clock (CPR) allows asynchronous capture of counter values without risk of reading partial updates. This eliminates metastability and bus contention issues common in single-clock counters, especially when the microcontroller reads outputs at arbitrary times - ensuring atomic, glitch-free data transfer in real-time automotive control loops.
Can the 74HC590PW-Q100 interface directly with 12 V automotive sensors?
Yes - its inputs feature integrated clamp diodes that safely shunt overvoltage transients to VCC or GND. When used with a series current-limiting resistor (e.g., 10 kΩ), the device accepts 12 V sensor signals without external protection components, simplifying design and reducing BOM cost in body electronics and chassis modules.
What is the significance of the AEC-Q100 Grade 1 qualification for this device?
AEC-Q100 Grade 1 certification validates continuous operation from –40 °C to +125 °C ambient, along with rigorous testing for thermal cycling, humidity, mechanical shock, and ESD. This makes the 74HC590PW-Q100 suitable for under-hood applications like engine control units and transmission controllers - where failure is not acceptable and lifetime reliability exceeds 15 years.
74HC590PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Function:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74HC590PW-Q100J FAQ
1.How can I place an order for 74HC590PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC590PW-Q100J 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 74HC590PW-Q100J reliable?
The price and inventory of 74HC590PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC590PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74HC590PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC590PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC590PW-Q100J?
74HC590PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC590PW-Q100J 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 74HC590PW-Q100J?
For technical support, including 74HC590PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC590PW-Q100J requirements.
6.How does Aetrix verify that 74HC590PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HC590PW-Q100J 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 74HC590PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74HC590PW-Q100J?
All 74HC590PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HC590PW-Q100J, 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 74HC590PW-Q100J part is unused and in its original packaging.
Return procedure for 74HC590PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC590PW-Q100J Tags
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SN74HC164DR
Texas Instruments
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SN74HC595DR
Texas Instruments
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74HC595PW,118
Nexperia USA Inc.
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SN74HC165PWR
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HEF4094BT,653
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74HC595D,118
Nexperia USA Inc.
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SN74HC595PWR
Texas Instruments
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74HC165D,653
Nexperia USA Inc.
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SN74LV165APWR
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74HC595BQ,115
Nexperia USA Inc.
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74HC165BQ,115
Nexperia USA Inc.
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CD4094BPWR
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