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Nexperia USA Inc. 74HC193D,652
- Part No.:
- 74HC193D,652
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC193D,652.pdf
- Description:
- IC BINARY COUNTER 4-BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
74HC193D,652 from Nexperia is a presettable synchronous 4-bit binary up/down counter in SO16 package, featuring separate CPU and CPD clock inputs, asynchronous master reset (MR), asynchronous parallel load (PL), and active-low terminal count outputs (TCU/TCD). It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and delivers ≤37 ns propagation delay at 6.0 V - used in programmable frequency dividers and bidirectional position tracking circuits.
For engineers reviewing the 74HC193D,652 datasheet, 74HC193D,652 pinout, 74HC193D,652 application, or 74HC193D,652 equivalent, key selection criteria include synchronous reversible counting behavior, TTL-compatible input thresholds (for 74HCT variant), SO16 thermal derating profile, and terminal count output waveform duplication for multistage cascading without external logic.
Technical Context
This device implements four edge-triggered D-type flip-flops with synchronous up/down control logic gated by CPU/CPD enable states. Count direction is determined solely by which clock input is pulsed while the other remains HIGH - no internal state machine or mode register is used.
Asynchronous functions (MR, PL) override all clock activity: MR forces Q0–Q3 LOW regardless of clock edges; PL loads D0–D3 into Q0–Q3 on PL LOW, independent of CPU/CPD levels. TCU and TCD replicate CPU/CPD waveforms at terminal states (15→0 and 0→15), enabling direct daisy-chaining.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC CMOS - compatible with 2.0–6.0 V supply; high noise immunity; low static current (≤160 μA at 125 °C). |
| Count Width & Direction | 4-bit binary, fully synchronous up/down - no ripple delay between bits; direction selected by CPU/CPD activation, not control pin. |
| Propagation Delay | ≤37 ns (CPU/CPD to Qn, VCC = 6.0 V) - enables reliable operation up to 15 MHz max clock frequency at 6.0 V. |
| Terminal Outputs | TCU and TCD are active-LOW, edge-aligned with CPU/CPD - directly drive next-stage clocks in multistage counters without inverters. |
| Supply Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing; VIH/VIL thresholds scale with VCC (e.g., VIH ≥4.2 V at VCC = 6.0 V). |
| Operating Temperature | -40 °C to +125 °C - qualified for automotive under-hood and industrial motor control environments. |
| ESD Rating | HBM >2000 V, CDM >1000 V - robust against handling and board-level transients without external protection. |
Pinout & Package
Package: SO16 (SOT109-1), plastic small outline, 3.9 mm body width, 16-pin surface-mount. Thermal derating: 12.4 mW/K above 110 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, 10, 15 | D0, D1, D2, D3 | Data inputs for parallel load; sampled asynchronously when PL = LOW, overriding clock and reset states. |
| 2, 3, 6, 7 | Q0, Q1, Q2, Q3 | Flip-flop outputs; bit-ordered LSB-to-MSB; driven LOW during MR assertion or before first clock edge. |
| 4 | CPD | Count-down clock input; LOW-to-HIGH edge triggered; must be held HIGH during up-counting to prevent metastability. |
| 5 | CPU | Count-up clock input; LOW-to-HIGH edge triggered; must be held HIGH during down-counting for deterministic operation. |
| 8 | GND | Ground reference (0 V); decoupling capacitor placement critical near this pin for noise suppression. |
| 11 | PL | Asynchronous parallel load enable (active LOW); overrides clock and reset; loads D0–D3 immediately to Q0–Q3. |
| 12 | TCU | Terminal count up (carry) output; active LOW at count = 15 → 0 transition; duplicates CPU waveform for cascade timing. |
| 13 | TCD | Terminal count down (borrow) output; active LOW at count = 0 → 15 transition; duplicates CPD waveform for cascade timing. |
| 14 | MR | Master reset (active HIGH); forces Q0–Q3 LOW unconditionally; disables PL and clocks until deasserted. |
| 16 | VCC | Positive supply rail; must be bypassed with 100 nF ceramic capacitor within 5 mm of pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous reversible counting | Eliminates ripple carry delay across bits - all Q outputs change simultaneously on clock edge, enabling precise timing in feedback loops. |
| Asynchronous parallel load | Enables instant presetting to any 4-bit value without waiting for clock edges - critical for reloadable timers and position zeroing. |
| Terminal count waveform duplication | TCU/TCD outputs mirror CPU/CPD timing edges, allowing direct connection to higher-order stage clocks without added logic or delay matching. |
| Wide voltage operation (2.0–6.0 V) | Permits direct interface with 3.3 V microcontrollers and 5 V legacy peripherals without level shifters in mixed-signal systems. |
| Industrial temperature range | Guaranteed functionality from -40 °C to +125 °C - validated for use in motor drives, power supplies, and automotive body controllers. |
Applications
| Programmable Frequency Divider | Bidirectional Position Encoder Interface |
|---|---|
|
Use Scenario: Dividing a 24 MHz system clock to generate 1.5 MHz, 750 kHz, and 375 kHz clock domains in an FPGA configuration controller. IC Role / Device Role / Timing Role: Synchronous 4-bit counter configured as modulo-N divider using TCU/TCD to trigger reload; CPU driven by source clock, PL loaded with preset values. Use Value: Achieves exact integer division ratios with zero cycle jitter accumulation across stages due to synchronous architecture and waveform-duplicating TCU. |
Use Scenario: Tracking linear actuator position via quadrature encoder signals in a CNC motion controller, requiring real-time up/down counting with direction reversal on command. IC Role / Device Role / Timing Role: Dedicated hardware counter accepting A/B phase edges as CPU/CPD; MR used for homing reset; PL for setting initial offset. Use Value: Eliminates MCU interrupt latency and software counting errors; TCD/TCU feed status flags to safety logic for over-travel detection. |
| Reloadable Timer for Power Sequencing | Multi-Stage Cascaded Counter |
|
Use Scenario: Generating precise 100 ms, 500 ms, and 2 s delays during FPGA power-up sequencing, with restart capability on fault detection. IC Role / Device Role / Timing Role: Down-counter initialized via PL with precomputed values; TCD triggers next stage or reset; MR enables immediate abort and restart. Use Value: Provides deterministic, hardware-based timing independent of firmware execution - critical for fail-safe power management. |
Use Scenario: Building a 12-bit counter for energy meter pulse accumulation using three 74HC193D devices in series. IC Role / Device Role / Timing Role: LSB stage TCU drives CPU of middle stage; middle stage TCU drives CPU of MSB stage; all share common MR/PL for global sync. Use Value: Enables full 4096-count range with no external gates - TCU/TCD waveform replication ensures minimal inter-stage skew (<5 ns added per stage). |
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 |
|---|---|---|---|
| 74HCT193D,652 | TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5–5.5 V); identical pinout and function; slightly higher ICC at 125 °C (160 μA vs 160 μA). | Required when interfacing with 5 V TTL logic families; same SO16 package and timing specs. | Select when driving from legacy 5 V microcontrollers or bus transceivers with TTL output levels. |
| SN74LS193N | Bipolar TTL technology; 4.75–5.25 V only; higher power (ICC ≈ 30 mA); slower (tPD ≈ 30–45 ns); DIP-16 package. | Limited to 5 V systems; unsuitable for battery-powered or wide-VCC designs; incompatible thermal profile. | Only consider for legacy board repairs where 74HC compatibility is not required and PCB footprint allows DIP-16. |
Compared with 74HCT193D,652, the 74HC193D,652 offers broader supply flexibility and lower static power, while SN74LS193N trades efficiency and voltage range for direct TTL interoperability in fixed 5 V environments.
Availability
74HC193D,652 is available at Aetrix Electronics and suitable for programmable timers, motor position tracking, power sequencing controllers, and multistage frequency dividers requiring stable component supply across automotive, industrial, and test equipment programs.
Supply support for 74HC193D,652 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global manufacturing and quality certifications including IATF 16949.
The 74HC193 belongs to Nexperia's industry-standard 74HC logic family, designed for robust, low-power, wide-supply digital control in automotive, industrial, and consumer applications where reliability and thermal resilience are critical.
FAQ
What is the maximum clock frequency supported by the 74HC193D,652?
The 74HC193D,652 supports up to 24 MHz at VCC = 6.0 V (typical), 19 MHz at VCC = 4.5 V, and 13 MHz at VCC = 2.0 V under recommended operating conditions. These values derive from measured propagation delay (tpd ≤37 ns at 6.0 V) and are validated across -40 °C to +125 °C.
Can CPU and CPD be driven simultaneously?
No - the datasheet explicitly requires that only one clock input (CPU or CPD) be held HIGH at any time. Simultaneous HIGH on both clocks violates functional specification and may cause unpredictable counting behavior or metastability in output transitions.
How does the TCU output behave during terminal count?
TCU goes LOW on the LOW-to-HIGH transition of CPU when the counter reaches 15 (1111), then remains LOW until CPU returns HIGH - effectively duplicating the CPU waveform with one-cycle delay. This allows direct connection to the CPU input of the next counter stage without additional gating.
Is the 74HC193D,652 RoHS compliant and halogen-free?
Yes - the 74HC193D,652 is RoHS compliant (2011/65/EU) and halogen-free per Nexperia's product compliance documentation (document ID: "74HC_HCT193" Rev. 8, March 2024), with lead finish SnAgCu and molded compound meeting IEC 61249-2-21 requirements.
74HC193D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Binary Counter
- Direction:
- Up, Down
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Reset:
- Asynchronous
- Timing:
- Synchronous
- Count Rate:
- 49 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-SO
74HC193D,652 FAQ
1.How can I place an order for 74HC193D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC193D,652 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 74HC193D,652 reliable?
The price and inventory of 74HC193D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC193D,652 is usually 5 days.
3.What payment methods are accepted for 74HC193D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC193D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC193D,652?
74HC193D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC193D,652 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 74HC193D,652?
For technical support, including 74HC193D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC193D,652 requirements.
6.How does Aetrix verify that 74HC193D,652 is sourced from the original manufacturer or authorized distributors?
All 74HC193D,652 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 74HC193D,652 meets industry standards.
7.What is the process for return or replacement of 74HC193D,652?
All 74HC193D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC193D,652, 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 74HC193D,652 part is unused and in its original packaging.
Return procedure for 74HC193D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC193D,652 Tags
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74HC393BQ,115
Nexperia USA Inc.
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