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Nexperia USA Inc. 74HCT193PW-Q100J
- Part No.:
- 74HCT193PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT193PW-Q100J.pdf
- Description:
- IC BINARY COUNTER 4-BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
74HCT193PW-Q100 from Nexperia is a presettable synchronous 4-bit binary up/down counter with TTL-compatible inputs, asynchronous master reset (MR), asynchronous parallel load (PL), and dual terminal count outputs (TCU/TCD). It operates from 4.5 V to 5.5 V across –40 °C to +125 °C, supports edge-triggered counting via separate CPU/CPD clocks, and is AEC-Q100 Grade 1 qualified for automotive powertrain and body control modules.
For engineers reviewing the 74HCT193PW-Q100 datasheet, 74HCT193PW-Q100 pinout, 74HCT193PW-Q100 application, or 74HCT193PW-Q100 equivalent, key selection criteria include its TTL-level input compatibility, guaranteed operation at 125 °C ambient, synchronous reversible counting architecture, and terminal count outputs designed for multistage cascade without external logic.
Technical Context
This device implements four cascaded D-type flip-flops with synchronous up/down control logic and asynchronous load/reset paths. Count direction is determined by holding one clock HIGH while pulsing the other - CPU active (CPD = HIGH) enables up-counting; CPD active (CPU = HIGH) enables down-counting. The TCU and TCD outputs replicate the respective clock edges at terminal states (15→0 and 0→15), enabling direct chaining of higher-order stages.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. All inputs meet JEDEC JESD8C (2.7–3.6 V) and JESD7A (2.0–6.0 V) standards, and the device exhibits latch-up immunity >100 mA per JESD78 Class II Level B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 4-bit synchronous binary up/down counter with asynchronous reset and parallel load |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V automotive microcontroller I/O domains |
| Operating Temperature | –40 °C to +125 °C - validated for under-hood automotive environments |
| Input Logic Type | TTL-compatible - accepts standard 5 V logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) |
| Max Clock Frequency | 16 MHz at VCC = 4.5 V, Tamb = +85 °C - sufficient for engine timing and sensor pulse accumulation |
| Propagation Delay | 23 ns (typ) CPU/CPD → Qn at VCC = 4.5 V - enables precise timing in real-time control loops |
| Terminal Count Outputs | TCU and TCD are active-LOW, edge-aligned to CPU/CPD - directly drive next-stage clocks in multistage counters |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, body width 4.4 mm, lead pitch 0.65 mm, rated for –40 °C to +125 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, 10, 15 (D0–D3) | Data input | Asynchronous parallel load data bus - values loaded when PL = LOW, independent of clock state |
| 2, 3, 6, 7 (Q0–Q3) | Flip-flop output | 4-bit binary count state - updated synchronously on LOW-to-HIGH transition of active clock |
| 4 (CPD) | Count down clock | Edge-triggered input - pulses increment count downward only when CPU = HIGH |
| 5 (CPU) | Count up clock | Edge-triggered input - pulses increment count upward only when CPD = HIGH |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O - must be low-impedance for noise immunity |
| 11 (PL) | Parallel load enable | Active-LOW asynchronous load - forces Q0–Q3 = D0–D3 regardless of clock or MR state |
| 12 (TCU) | Terminal count up | Active-LOW carry output - goes LOW on CPU edge when count = 15, duplicates CPU waveform |
| 13 (TCD) | Terminal count down | Active-LOW borrow output - goes LOW on CPD edge when count = 0, duplicates CPD waveform |
| 14 (MR) | Master reset | Active-HIGH asynchronous clear - forces Q0–Q3 = 0000, overrides PL, CPU, and CPD |
| 16 (VCC) | Supply voltage | Positive supply rail - powers all internal logic; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications requiring operation up to +125 °C ambient |
| Asynchronous parallel load | Enables immediate presetting of any 4-bit value without waiting for clock edges |
| Dual terminal count outputs | TCU/TCD provide edge-aligned carry/borrow signals for seamless multistage counter expansion |
| TTL-compatible inputs | Accepts standard 5 V logic levels - eliminates level-shifting in legacy 5 V systems |
| Clamp diode protection | Allows safe interface to voltages > VCC using series current-limiting resistors |
Applications
| Engine RPM Measurement | Transmission Gear Position Tracking |
|---|---|
Use Scenario: Counts crankshaft position sensor pulses over fixed time intervals to compute real-time engine speed. IC Role / Device Role / Timing Role: Synchronous up-counter with CPU driven by sensor edge, TCU cascaded to timer overflow interrupt. Use Value: Enables sub-100 rpm resolution at 8000 rpm with 16 MHz max clock, supporting closed-loop ignition timing. | Use Scenario: Tracks gear selector switch transitions and validates mechanical position against CAN-reported gear state. IC Role / Device Role / Timing Role: Bidirectional counter storing gear index (0–7); PL loads initial position, CPD/CPU track up/down shifts. Use Value: Provides deterministic, glitch-free position tracking without software polling or debouncing overhead. |
| Brake Pedal Stroke Accumulator | Seat Belt Pretensioner Activation Timer |
Use Scenario: Integrates analog-to-digital converted brake pedal displacement samples to detect progressive actuation patterns. IC Role / Device Role / Timing Role: Up/down counter accumulating filtered ADC values; MR resets on pedal release, TCU triggers warning threshold. Use Value: Delivers hardware-based hysteresis and threshold detection independent of MCU load or latency. | Use Scenario: Measures time between crash sensor trigger and pretensioner firing command to verify deployment sequence timing. IC Role / Device Role / Timing Role: Precision down-counter initialized to safety margin value; CPD decrements on 1 ms system clock, TCD asserts fire signal. Use Value: Guarantees <500 ns jitter in critical safety timing path, meeting ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-bit synchronous up/down counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC193PW-Q100 | CMOS-level inputs (VIH ≥ 3.15 V @ VCC = 4.5 V), wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems with 3.3 V controllers and 5 V peripherals | Select when interfacing with CMOS logic families or operating below 4.5 V supply |
| SN74LS193N | Bipolar TTL technology, 4.75–5.25 V only, higher ICC (30 mA typ), slower (30 ns min propagation) | Limited to legacy 5 V-only designs; lacks AEC-Q100 qualification and 125 °C rating | Select only for cost-sensitive non-automotive replacements where temperature and qualification are not required |
Compared with 74HC193PW-Q100, the HCT variant offers superior noise immunity in noisy 5 V automotive harnesses due to tighter TTL input thresholds; compared with SN74LS193N, it delivers lower power, higher speed, and full AEC-Q100 compliance - making it the sole qualified choice for new automotive designs.
Availability
74HCT193PW-Q100 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and advanced driver assistance systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT193PW-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 delivering high-performance, reliable components for automotive, industrial, and consumer applications, with leadership in logic, MOSFETs, and ESD protection.
This device belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust digital timing and counting functions in harsh-temperature vehicle subsystems where reliability and qualification are mandatory.
FAQ
Can 74HCT193PW-Q100 operate at 3.3 V supply?
No. The 74HCT193PW-Q100 is specified only for 4.5 V to 5.5 V operation per its recommended conditions. At 3.3 V, TTL input thresholds are not met, and output drive strength degrades significantly. Use the 74HC193PW-Q100 variant for 3.3 V–6.0 V compatibility.
What happens if both CPU and CPD are pulsed simultaneously?
Simultaneous pulsing violates the functional requirement that only one clock be held HIGH at a time. Behavior is undefined - the counter may skip states, lock, or produce metastable outputs. Design must enforce mutual exclusion via external gating or controller sequencing.
Is the parallel load operation truly asynchronous?
Yes. When PL is pulled LOW, D0–D3 appear on Q0–Q3 within tPLH (max 69 ns at VCC = 4.5 V), regardless of CPU, CPD, or MR state. This occurs even during active counting or reset - no clock edge is required.
How is the TCU output synchronized to the CPU clock?
TCU is edge-aligned to CPU: it goes LOW on the same LOW-to-HIGH CPU transition that advances the count from 15 to 0, and returns HIGH on the subsequent CPU rising edge. This exact duplication enables direct connection to the CPU input of the next counter stage without additional synchronization logic.
74HCT193PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Binary Counter
- Direction:
- Up, Down
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Reset:
- Asynchronous
- Timing:
- Synchronous
- Count Rate:
- 43 MHz
- Trigger Type:
- Positive Edge
- Voltage - Supply:
- 4.5 V ~ 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HCT193PW-Q100J FAQ
1.How can I place an order for 74HCT193PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT193PW-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 74HCT193PW-Q100J reliable?
The price and inventory of 74HCT193PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT193PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT193PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT193PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT193PW-Q100J?
74HCT193PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT193PW-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 74HCT193PW-Q100J?
For technical support, including 74HCT193PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT193PW-Q100J requirements.
6.How does Aetrix verify that 74HCT193PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT193PW-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 74HCT193PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT193PW-Q100J?
All 74HCT193PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT193PW-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 74HCT193PW-Q100J part is unused and in its original packaging.
Return procedure for 74HCT193PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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