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onsemi 74VHC32SJ
- Part No.:
- 74VHC32SJ
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74VHC32SJ.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,094
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Product details
Overview
74VHC32SJ from ON Semiconductor is a quad 2-input OR gate in EIAJ TYPE II SOP-14 package, operating from 2.0V to 5.5V supply, delivering 3.8ns typical propagation delay at 5V and 15pF load, with 2µA max quiescent current at 25°C - used in digital logic interfacing, level translation between 3V/5V systems, and discrete gate-based control circuits.
For engineers reviewing the 74VHC32SJ datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance up to 7V, power-down input protection, noise immunity (28% VCC min), low dynamic output noise (VOLP ≤ 0.8V), and compatibility with 74HC32 logic families.
Technical Context
The 74VHC32SJ implements four independent CMOS OR gates using silicon-gate technology, each with buffered output stages for improved noise rejection and drive capability. Its input protection circuit allows safe operation with input voltages from –0.5V to +7.0V regardless of VCC, enabling robust 5V-to-3V system interfacing and battery-backup applications.
All inputs feature power-down protection and are compatible with TTL-level signals. The device supports rail-to-rail output swing (VOL ≤ 0.1V at 50µA, VOH ≥ 4.4V at 4.5V) and meets JEDEC MS-012 and EIAJ TYPE II mechanical standards for SOP-14 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Four independent 2-input OR gates - enables compact multi-channel Boolean logic without external gating. |
| Propagation Delay | 3.8ns typical at VCC = 5V, CL = 15pF - supports >100MHz toggle rates in high-speed combinatorial paths. |
| Supply Voltage Range | 2.0V to 5.5V - allows direct use in mixed-voltage systems including 3.3V and 5V domains. |
| Input Voltage Tolerance | –0.5V to +7.0V - permits safe connection to overvoltage sources or unpowered subsystems without clamping diodes. |
| Quiescent ICC | 2µA max at TA = 25°C - ensures ultra-low standby power in battery-operated or always-on logic monitoring circuits. |
| Noise Immunity | VNIH/VNIL ≥ 28% VCC - provides reliable switching under EMI-prone industrial environments with marginal signal margins. |
| Output Drive | ±8mA at VCC = 4.5V - drives standard CMOS loads and small capacitive buses without external buffers. |
Pinout & Package
EIAJ TYPE II 14-lead Small Outline Package (SOP), 5.3mm body width, gull-wing leads, JEDEC-compliant footprint (land pattern SOP65P640X110-14M).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | Eight logic inputs across four OR gates - each pair feeds one gate; all support overvoltage-tolerant operation. |
| 3, 6, 10, 13 | Output (Y1/Y2/Y3/Y4) | Four push-pull CMOS outputs - rail-to-rail swing, ±8mA drive, low dynamic noise (VOLP ≤ 0.8V). |
| 7 | GND | Ground reference for all logic and power domains - must be low-impedance for noise suppression. |
| 14 | VCC | Positive supply input - accepts 2.0–5.5V; decoupling capacitor required within 1cm for stable AC performance. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed CMOS architecture | 3.8ns tPD at 5V enables timing-critical glue logic in microcontroller peripheral expansion. |
| Input overvoltage tolerance | Inputs withstand –0.5V to +7.0V independently of VCC - eliminates need for external level shifters in mixed-supply designs. |
| Power-down input protection | Safe input biasing when VCC = 0V - prevents back-powering or latch-up during hot-swap or partial-power-down sequences. |
| Low dynamic output noise | VOLP ≤ 0.8V and VOLV ≥ –0.8V at CL = 50pF - reduces crosstalk in dense PCB layouts with adjacent signal traces. |
| 74HC32 pin/function compatibility | Direct drop-in replacement for legacy 74HC32 designs - preserves existing PCB layout and firmware logic mapping. |
Applications
| Industrial Control Logic | Microcontroller Peripheral Expansion |
|---|---|
|
Use Scenario: Discrete OR logic for combining multiple sensor fault flags into a single system-alert line in PLC I/O modules. IC Role / Device Role / Timing Role: Combinatorial logic aggregator - performs real-time wired-OR function with sub-4ns latency and no propagation skew between channels. Use Value: Eliminates need for software polling or additional MCU GPIOs; supports fail-safe alerting even during MCU reset or brownout. |
Use Scenario: Expanding address decoding or interrupt prioritization in 8-bit MCU systems with limited native gate resources. IC Role / Device Role / Timing Role: Hardware-level logic accelerator - offloads OR operations from firmware, reducing CPU cycle overhead and jitter in time-sensitive ISR paths. Use Value: Enables deterministic response <10ns after event assertion - critical for motor commutation timing and encoder edge synchronization. |
| 3.3V/5V System Interfacing | Battery-Backed Data Retention Circuits |
|
Use Scenario: Level-shifting enable signals between 3.3V FPGA configuration logic and 5V analog front-end power controllers. IC Role / Device Role / Timing Role: Bidirectional voltage-domain translator - leverages input overvoltage tolerance to accept 3.3V logic while driving 5V-compatible loads. Use Value: Removes requirement for dedicated level translators or resistor-divider networks - simplifies BOM and improves signal integrity. |
Use Scenario: Enabling backup power path selection in real-time clock (RTC) modules where main supply may fail unexpectedly. IC Role / Device Role / Timing Role: Power-fail detection combiner - ORs multiple low-battery indicators to assert a unified VBACKUP_EN signal before main rail collapse. Use Value: Ensures uninterrupted RTC operation during switchover; operates reliably with VCC as low as 2.0V and inputs at 0V (power-down safe). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC32D,653 (Nexperia) | Slower tPD (15ns typ. at 6V), higher ICC (4µA max), narrower VCC range (2.0–6.0V), same SOP-14 package. | Lower speed limits use in >20MHz combinatorial paths; higher ICC increases standby power in battery systems. | Select when cost sensitivity outweighs speed/power requirements and 6V operation is needed. |
| SN74LVC32APWR (TI) | Wider VCC range (1.65–3.6V), lower VIL/VIH thresholds, 3.3V-only optimized, TSSOP-14 package. | Not suitable for 5V systems or mixed-voltage interfacing; requires redesign if replacing 5V-tolerant logic. | Prefer only in pure 3.3V designs where LVC family's lower voltage margin and higher noise immunity are advantageous. |
Compared with 74VHC32SJ, 74HC32D offers broader voltage headroom but sacrifices speed and quiescent power, while SN74LVC32APWR delivers superior 3.3V performance but lacks 5V tolerance and overvoltage-safe inputs - making 74VHC32SJ uniquely suited for dual-voltage, low-noise, and hot-swap-capable logic interfaces.
Availability
74VHC32SJ is available at Aetrix Electronics and suitable for industrial control logic, microcontroller peripheral expansion, 3.3V/5V system interfacing, and battery-backed data retention circuits requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature.
Supply support for 74VHC32SJ 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud, and IoT applications.
The 74VHC32SJ belongs to the VHC (Very High Speed CMOS) logic family, designed for high-speed, low-power digital interfacing in mixed-voltage systems where reliability, noise immunity, and overvoltage tolerance are critical.
FAQ
What is the maximum input voltage rating for the 74VHC32SJ?
The 74VHC32SJ supports DC input voltages from –0.5V to +7.0V, independent of VCC level. This overvoltage tolerance allows safe connection to unpowered subsystems or higher-voltage rails without external protection components - a key advantage over standard HC devices. The 74VHC32SJ maintains this rating across its full operating temperature range (–40°C to +85°C).
Is the 74VHC32SJ pin-compatible with the 74HC32?
Yes, the 74VHC32SJ is pin- and function-compatible with the 74HC32, sharing identical pinout, logic behavior, and SOP-14 footprint. This enables direct replacement in existing designs without PCB modification. However, the 74VHC32SJ adds enhanced features including faster propagation delay (3.8ns vs. ~15ns), lower ICC (2µA vs. ~4µA), and extended input voltage tolerance (–0.5V to +7.0V vs. 0V to VCC).
What is the recommended decoupling for the 74VHC32SJ in high-speed operation?
For stable high-speed operation, place a 100nF ceramic capacitor between VCC (pin 14) and GND (pin 7) within 1 cm of the 74VHC32SJ package. In systems with multiple 74VHC32SJ units or high-frequency switching loads, add a bulk 4.7µF tantalum or aluminum electrolytic capacitor per power rail segment. This minimizes supply bounce and ensures consistent 3.8ns propagation delay performance.
Can unused inputs on the 74VHC32SJ be left floating?
No - unused inputs on the 74VHC32SJ must be tied HIGH or LOW; floating inputs are prohibited. The datasheet explicitly states that floating inputs may cause excessive ICC, oscillation, or unpredictable output states due to internal CMOS threshold sensitivity. For OR gates, tying unused inputs LOW (GND) ensures they do not affect the output logic state - a practice confirmed in the 74VHC32SJ's Recommended Operating Conditions table.
Does the 74VHC32SJ support operation at 2.0V supply voltage?
Yes, the 74VHC32SJ is fully specified down to VCC = 2.0V, with guaranteed performance including VIH ≥ 1.50V, VOL ≤ 0.1V (at 50µA), and tPLH/tPHL ≤ 13.0ns (CL = 50pF). This makes the 74VHC32SJ suitable for low-voltage battery-powered applications such as portable instrumentation or energy-harvesting nodes where supply rails dip near 2.0V during discharge cycles.
74VHC32SJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V
- Input Logic Level - High:
- 1.5V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOP
74VHC32SJ FAQ
1.How can I place an order for 74VHC32SJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC32SJ 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 74VHC32SJ reliable?
The price and inventory of 74VHC32SJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC32SJ is usually 5 days.
3.What payment methods are accepted for 74VHC32SJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC32SJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC32SJ?
74VHC32SJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC32SJ 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 74VHC32SJ?
For technical support, including 74VHC32SJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC32SJ requirements.
6.How does Aetrix verify that 74VHC32SJ is sourced from the original manufacturer or authorized distributors?
All 74VHC32SJ 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 74VHC32SJ meets industry standards.
7.What is the process for return or replacement of 74VHC32SJ?
All 74VHC32SJ units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC32SJ, 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 74VHC32SJ part is unused and in its original packaging.
Return procedure for 74VHC32SJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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