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Nexperia USA Inc. 74HCT193D-Q100J
- Part No.:
- 74HCT193D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT193D-Q100J.pdf
- Description:
- IC BINARY COUNTER 4-BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,315
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Product details
Overview
74HCT193D-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 active LOW at 15, TCD active LOW at 0). It operates from 4.5 V to 5.5 V across -40 °C to +125 °C and is AEC-Q100 Grade 1 qualified for automotive body control modules requiring deterministic counting with carry/borrow chaining.
For engineers reviewing the 74HCT193D-Q100 datasheet, 74HCT193D-Q100 pinout, 74HCT193D-Q100 application, or 74HCT193D-Q100 equivalent, key selection criteria include TTL-level input compatibility, SO16 package thermal performance, propagation delay ≤65 ns at 4.5 V, asynchronous load/reset timing margins, and terminal count output waveform duplication for multistage cascading.
Technical Context
This counter uses four edge-triggered D-type flip-flops with synchronous up/down control via separate CPU and CPD clocks. Count direction is enforced by holding the inactive clock HIGH-ensuring only one clock is active per cycle to prevent metastability. The TCU and TCD outputs replicate the respective clock edges at terminal states, enabling direct connection to higher-order stage clocks without external logic.
Asynchronous functions (PL, MR) override all clock activity and complete within 60 ns at 4.5 V. Input clamping diodes support interfacing to voltages beyond VCC when used with current-limiting resistors. The device implements full CMOS output drive (±4 mA at 4.5 V) with TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), ensuring robust noise immunity in noisy automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible inputs, CMOS outputs; enables direct interface with legacy 5 V microcontrollers and FPGAs |
| Count Width & Mode | 4-bit synchronous binary up/down; no ripple delay between bits - all Q0–Q3 change simultaneously on clock edge |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard automotive 5 V rail with ±10 % tolerance; excludes 2.0–4.4 V HC-range operation |
| Operating Temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications |
| Max Clock Frequency | 16 MHz at -40 °C to +125 °C - supports real-time motor position tracking and gear ratio monitoring |
| Propagation Delay | CPU/CPD to Qn: ≤65 ns (max); PL to Qn: ≤69 ns (max) - ensures setup/hold compliance in 20 MHz system designs |
| Terminal Count Outputs | TCU active LOW at 15 (HHHH), TCD active LOW at 0 (LLLL); duplicate CPU/CPD waveforms for seamless multistage chaining |
Pinout & Package
74HCT193D-Q100 is housed in a plastic small outline package (SO16) per SOT109-1: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, with gull-wing leads and pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, 10, 15 (D0–D3) | Parallel data inputs | Load 4-bit value asynchronously when PL = LOW; unaffected by clock states |
| 2, 3, 6, 7 (Q0–Q3) | Counter output bits | Binary state (0–15) updated synchronously on CPU↑ (up) or CPD↑ (down) |
| 4 (CPD) | Count-down clock input | LOW-to-HIGH edge triggers decrement; must be held HIGH during up-counting |
| 5 (CPU) | Count-up clock input | LOW-to-HIGH edge triggers increment; must be held HIGH during down-counting |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O; requires low-impedance PCB plane |
| 11 (PL) | Asynchronous parallel load | Active LOW; loads D0–D3 immediately, overriding CPU/CPD/MR until deasserted |
| 12 (TCU) | Terminal count up output | Active LOW when count = 15; duplicates CPU waveform - directly drives next-stage CPU |
| 13 (TCD) | Terminal count down output | Active LOW when count = 0; duplicates CPD waveform - directly drives next-stage CPD |
| 14 (MR) | Asynchronous master reset | Active HIGH; forces Q0–Q3 = LLLL regardless of clocks or PL state |
| 16 (VCC) | Positive supply | 4.5–5.5 V input; decoupling capacitor (100 nF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C with full reliability testing (HTOL, TC, ESD) |
| Asynchronous parallel load & reset | Enables immediate state initialization without waiting for clock edges - critical for fault recovery sequences |
| Dual terminal count outputs (TCU/TCD) | Eliminates need for external decode logic to detect 0/15 boundaries; supports daisy-chained multi-digit counters |
| TTL-compatible input thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 4.5–5.5 V - ensures interoperability with legacy 5 V MCU GPIOs and discrete logic |
| Input clamping diodes | Permits safe interface to signals exceeding VCC (e.g., 12 V sensor lines) when used with series current-limiting resistors |
Applications
| Motor Position Tracking | Transmission Gear Monitoring |
|---|---|
Use Scenario: Measuring rotational position of BLDC motors using quadrature encoder pulses fed into CPU/CPD. IC Role / Device Role / Timing Role: Synchronous 4-bit counter captures pulse counts with zero ripple delay; TCU/TCD signal gear shift transitions. Use Value: Enables precise 16-step position resolution per revolution without software overhead or interrupt latency. | Use Scenario: Monitoring gear selector position in automatic transmissions via mechanical cam switches driving D0–D3. IC Role / Device Role / Timing Role: Asynchronous parallel load presets gear code; CPU/CPD track engagement/disengagement timing. Use Value: Provides deterministic, glitch-free gear state reporting even during rapid mechanical transitions. |
| Body Control Module Timer | Dashboard Cluster Pulse Accumulation |
Use Scenario: Implementing programmable window lift timeout using external 1 Hz clock on CPU and preset value loaded via PL. IC Role / Device Role / Timing Role: Up-counter with MR-initiated clear and PL-loaded duration; TCU triggers relay cutoff. Use Value: Hardware-based timing eliminates MCU resource usage and ensures fail-safe shutdown independent of firmware. | Use Scenario: Accumulating vehicle speed pulses (from ABS wheel sensors) across multiple 4-bit stages for odometer calculation. IC Role / Device Role / Timing Role: Cascaded up-counter where TCU of lower stage drives CPU of next stage. Use Value: Achieves 16-bit resolution using only standard logic ICs - no custom ASIC or FPGA required. |
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 |
|---|---|---|---|
| 74HC193D-Q100 | CMOS-input version; VIH/VIL scale with VCC (e.g., VIH ≥ 3.15 V at 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems (e.g., 3.3 V MCU controlling 5 V peripherals) but incompatible with pure TTL sources | Select when interfacing with CMOS outputs or variable supply rails; avoid when driving from 5 V TTL gates |
| SN74LS193N | Bipolar TTL technology; 4.75–5.25 V only; higher ICC (30 mA typical); slower (tPD ≈ 25–40 ns) | Limited to legacy 5 V TTL systems; lacks AEC-Q100 qualification and wide temperature support | Use only for repair of obsolete equipment; not recommended for new automotive designs |
Compared with 74HC193D-Q100 and SN74LS193N, the 74HCT193D-Q100 uniquely balances TTL input compatibility, AEC-Q100 Grade 1 qualification, and low-power CMOS output drive - making it the sole choice for new automotive counting applications requiring both legacy interface support and extended temperature operation.
Availability
74HCT193D-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, transmission control units, and dashboard cluster electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT193D-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 specializing in high-performance, high-reliability logic, analog, and MOSFET solutions with leadership in automotive-grade components.
The 74HCT-Q100 series delivers AEC-Q100 qualified standard logic ICs engineered specifically for automotive subsystems where functional safety, thermal resilience, and long-term supply stability are mandatory.
FAQ
Can 74HCT193D-Q100 operate at 3.3 V?
No. The 74HCT193D-Q100 is specified only for 4.5 V to 5.5 V operation. Its TTL-compatible inputs require minimum VIH = 2.0 V, but output drive strength and timing parameters are guaranteed solely within the 4.5–5.5 V range. For 3.3 V systems, use the 74LVC193 or 74AUP1G193 with appropriate level translation.
What happens if both CPU and CPD are pulsed simultaneously?
Simultaneous pulsing violates the functional requirement that only one clock be active (LOW) while the other is held HIGH. This may cause unpredictable counting behavior, including skipped or repeated states, due to race conditions between internal enable paths. The datasheet explicitly prohibits this condition to ensure deterministic operation.
Is the SO16 package RoHS and REACH compliant?
Yes. The SOT109-1 (SO16) package used for 74HCT193D-Q100 meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound. Compliance documentation is available in Nexperia's official product change notices and material declarations.
How is the terminal count output used in cascaded configurations?
In multistage counters, TCU is wired directly to the CPU of the next higher-order stage, and TCD to its CPD. Because TCU and TCD replicate the input clock waveform (not just a static flag), they provide edge-aligned enable signals - eliminating the need for external AND/OR logic and preserving synchronous timing across stages despite inter-stage propagation delay.
74HCT193D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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-SO
74HCT193D-Q100J FAQ
1.How can I place an order for 74HCT193D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT193D-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 74HCT193D-Q100J reliable?
The price and inventory of 74HCT193D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT193D-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT193D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT193D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT193D-Q100J?
74HCT193D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT193D-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 74HCT193D-Q100J?
For technical support, including 74HCT193D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT193D-Q100J requirements.
6.How does Aetrix verify that 74HCT193D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT193D-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 74HCT193D-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT193D-Q100J?
All 74HCT193D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT193D-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 74HCT193D-Q100J part is unused and in its original packaging.
Return procedure for 74HCT193D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT193D-Q100J Tags
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Nexperia USA Inc.
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