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Nexperia USA Inc. 74HC9115D,112
- Part No.:
- 74HC9115D,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74HC9115D,112.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:382
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Product details
Overview
74HC9115D,112 from Nexperia is a 9-bit Schmitt trigger buffer IC with open-drain outputs, designed for noise-immune signal conditioning in industrial and automotive-adjacent digital interfaces. It operates from 2.0 V to 6.0 V, features ±20 mA output drive capability, 19–165 ns propagation delay (VCC-dependent), and supports ambient temperatures up to +125 °C in SO20 package. Used to clean slow-rising signals before feeding microcontroller GPIOs or driving LED arrays.
For engineers reviewing the 74HC9115D,112 datasheet, 74HC9115D,112 pinout, 74HC9115D,112 application, or 74HC9115D,112 equivalent, key selection criteria include Schmitt trigger hysteresis (0.5–1.1 V), open-drain flexibility for wired-AND logic, input clamp diodes enabling overvoltage-tolerant interfacing, and guaranteed operation across -40 °C to +125 °C.
Technical Context
The 74HC9115 implements nine independent Schmitt-trigger input buffers, each with an open-drain NMOS output stage. Input clamping diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors. Its transfer characteristics define distinct VT+ (1.75–4.20 V) and VT− (1.35–3.30 V) thresholds, delivering 0.5–1.1 V hysteresis for robust noise rejection.
Dynamic behavior is characterized by propagation delays ranging from 10 ns (VCC = 6.0 V, CL = 50 pF) to 165 ns (VCC = 2.0 V, CL = 50 pF), with output transition times (tTHL) as low as 6 ns. Power dissipation is minimized via CMOS architecture, with ICC ≤ 160 μA at VCC = 6.0 V and full static conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Input Hysteresis (VH) | 0.5 V to 1.1 V - Rejects noise spikes up to ±0.55 V on slow-rising signals (e.g., mechanical switch bounce, sensor outputs). |
| Propagation Delay (tpd) | 10 ns to 165 ns - Varies with VCC and load; supports timing-critical signal conditioning up to ~10 MHz at 6 V. |
| Output Drive (IO) | ±25 mA per output - Sinks up to 25 mA per open-drain Yn pin, suitable for driving LEDs or pull-up-based bus lines. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive-adjacent and industrial control environments. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces need for external ESD protection in board-level designs. |
| Input Leakage (II) | ±1.0 μA max - Ensures minimal loading on high-impedance sources like potentiometers or RC networks. |
Pinout & Package
74HC9115D,112 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Pin 1 is index-marked; pins are arranged in two rows with GND (pin 10) and VCC (pin 20) centrally located for optimal decoupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A8 (pins 1–9) | Data inputs | Schmitt-triggered inputs with internal clamp diodes; tolerate VI > VCC when series resistor limits current to ≤20 mA. |
| GND (pin 10) | Ground reference | 0 V return path for all internal circuitry and output sink current; must be low-impedance for noise immunity. |
| Y0–Y8 (pins 11–19) | Open-drain outputs | NMOS drain terminals requiring external pull-up; enable wired-AND logic, I²C-compatible bus driving, or LED anode control. |
| VCC (pin 20) | Supply voltage | Primary power rail; requires local 100 nF ceramic decoupling capacitor placed within 5 mm of pin 20. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (2.0–6.0 V) | Eliminates need for separate voltage regulators when interfacing mixed-voltage subsystems (e.g., 3.3 V MCU controlling 5 V peripherals). |
| Schmitt trigger inputs with 0.5–1.1 V hysteresis | Converts noisy or slow analog-like signals (e.g., from thermistors or limit switches) into clean digital edges without external RC filtering. |
| Open-drain outputs with ±25 mA rating | Supports flexible bus topologies (wired-AND), direct LED driving (anode to VCC), and compatibility with legacy 5 V TTL logic levels. |
| Input clamp diodes + current-limiting support | Allows safe connection to signals up to VCC + 0.5 V using external resistors - critical for interfacing with higher-voltage sensors or legacy systems. |
| High noise immunity & latch-up immunity (>100 mA) | Ensures reliable operation in electrically harsh environments (e.g., motor drives, industrial PLC I/O modules) without system resets or damage. |
Applications
| Industrial Sensor Interface | LED Status Indication |
|---|---|
|
Use Scenario: Conditioning output from a slow-rising NTC thermistor divider or mechanical limit switch in a factory automation controller. IC Role / Device Role / Timing Role: Schmitt buffer converts marginal analog transitions into clean, jitter-free logic levels for MCU GPIO sampling. Use Value: Eliminates software debouncing overhead and prevents false triggers caused by EMI-induced ringing on long sensor cables. |
Use Scenario: Driving multiple status LEDs from a 3.3 V microcontroller in a medical device panel where LEDs require 5 V anode supply. IC Role / Device Role / Timing Role: Open-drain outputs sink current from 5 V LED strings while accepting 3.3 V logic inputs - no level shifter needed. Use Value: Reduces BOM count and PCB area versus discrete MOSFET solutions; enables shared 5 V rail for uniform LED brightness. |
| Wired-AND Bus Signal Conditioning | Legacy System Voltage Translation |
|
Use Scenario: Implementing a fault-reporting bus across multiple subsystems (e.g., power supply monitors, fan controllers) in telecom equipment. IC Role / Device Role / Timing Role: Each subsystem pulls down its assigned Yn line; master reads OR'ed status via single pull-up resistor. Use Value: Provides hardware-level fault aggregation with deterministic timing - avoids polling latency and software coordination complexity. |
Use Scenario: Interfacing a modern 3.3 V FPGA I/O bank to legacy 5 V industrial control signals (e.g., relay drivers, encoder outputs). IC Role / Device Role / Timing Role: A0–A8 accept 5 V inputs (with series resistor); Y0–Y8 output 3.3 V-compatible open-drain logic to FPGA inputs. Use Value: Achieves bidirectional voltage translation without direction control pins or active translators - simplifies routing and timing closure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt trigger buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVCH16T245DGGR | 16-bit dual-supply level translator with Schmitt inputs on A-side only; no open-drain outputs. | Requires separate VCCA/VCCB rails; suited for bidirectional data buses, not unidirectional noise cleanup. | Select only when level translation between mismatched domains (e.g., 1.8 V ↔ 5 V) is required alongside signal conditioning. |
| 74LVC1G17GW,125 | Single-channel Schmitt buffer in SC-70; push-pull (not open-drain) output; 1.65–5.5 V supply. | Lacks multi-bit integration and open-drain flexibility; insufficient for bus-wire-AND or LED-sinking use cases. | Choose only for space-constrained point-to-point signal cleanup where open-drain functionality is unnecessary. |
Compared with SN74LVCH16T245DGGR and 74LVC1G17GW,125, the 74HC9115D,112 uniquely combines 9-channel density, true open-drain outputs, and input overvoltage tolerance - making it irreplaceable for compact, multi-signal industrial I/O conditioning without added discrete components.
Availability
74HC9115D,112 is available at Aetrix Electronics and suitable for industrial control panels, automotive diagnostic tools, and medical device status indicators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC9115D,112 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, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HC9115 belongs to Nexperia's HC-series logic family, engineered for robust noise immunity and wide-voltage interoperability in real-world industrial and transportation applications where signal integrity cannot be compromised.
FAQ
Can 74HC9115D,112 drive LEDs directly?
Yes - each open-drain output (Y0–Y8) sinks up to 25 mA at VCC = 6.0 V with VOL ≤ 0.4 V. Connect LED anode to VCC (or higher rail via current-limiting resistor), cathode to Yn, and ensure total package power dissipation stays below 500 mW. Derating applies above +109 °C ambient.
What is the minimum input rise time supported?
The 74HC9115D,112 imposes no minimum input rise/fall time due to Schmitt trigger architecture. Inputs remain functional even with millisecond-scale transitions - confirmed by "unlimited input rise and fall times" in official specifications and validated across -40 °C to +125 °C.
Is external pull-up required on open-drain outputs?
Yes - all Y0–Y8 outputs require external pull-up resistors to define HIGH state voltage and current. Typical values range from 1 kΩ (for fast switching with 5 V rail) to 10 kΩ (for low-power LED indication). No internal pull-ups exist.
Does 74HC9115D,112 support hot insertion?
No - the device lacks hot-swap protection circuitry. Input clamp diodes provide limited overvoltage tolerance (VI < VCC + 0.5 V), but applying VCC after signal inputs may cause latch-up or excessive current. Power sequencing must follow VCC-first protocol.
74HC9115D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 9
- Number of Bits per Element:
- 1
- Input Type:
- Schmitt Trigger
- Output Type:
- Open Drain
- Current - Output High, Low:
- -, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74HC9115D,112 FAQ
1.How can I place an order for 74HC9115D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC9115D,112 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 74HC9115D,112 reliable?
The price and inventory of 74HC9115D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC9115D,112 is usually 5 days.
3.What payment methods are accepted for 74HC9115D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC9115D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC9115D,112?
74HC9115D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC9115D,112 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 74HC9115D,112?
For technical support, including 74HC9115D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC9115D,112 requirements.
6.How does Aetrix verify that 74HC9115D,112 is sourced from the original manufacturer or authorized distributors?
All 74HC9115D,112 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 74HC9115D,112 meets industry standards.
7.What is the process for return or replacement of 74HC9115D,112?
All 74HC9115D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC9115D,112, 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 74HC9115D,112 part is unused and in its original packaging.
Return procedure for 74HC9115D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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