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Texas Instruments SN74HC151QDRQ1
- Part No.:
- SN74HC151QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74HC151QDRQ1.pdf
- Description:
- IC MULTIPLEXER 1 X 8:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,990
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Product details
Overview
SN74HC151QDRQ1 from Texas Instruments is an automotive-qualified 8-line to 1-line data selector/multiplexer in a 16-pin SOIC package, operating from 2 V to 6 V with ±6-mA output drive at 5 V, low 1 µA max input current, and dual complementary outputs (Y active-high, W active-low). It functions as a Boolean-function generator or parallel-to-serial converter in digital control logic.
For engineers reviewing the SN74HC151QDRQ1 datasheet, SN74HC151QDRQ1 pinout, SN74HC151QDRQ1 application, or SN74HC151QDRQ1 equivalent, key selection criteria include automotive temperature range (–40°C to 125°C), strobe-enabled operation, binary-select decoding of eight inputs, and compatibility with LSTTL loads.
Technical Context
The SN74HC151QDRQ1 implements full binary decoding using three select lines (A, B, C) to route one of eight data inputs (D0–D7) to the Y (true) and W (inverted) outputs. Strobe (G) must be low to enable selection; high G forces Y = low and W = high.
It operates in standard CMOS logic family with rail-to-rail input voltage tolerance (0 V to VCC), supports 50 pF capacitive load, and exhibits propagation delays as low as 13 ns (typical) at 6 V with 25°C ambient - enabling reliable use in medium-speed combinational logic and address/data routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 6 V - ensures interoperability with 3.3 V and 5 V logic systems without level shifters. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive ECUs and industrial control modules. |
| Output Drive | ±6 mA at 5 V - sufficient to directly drive 10 LSTTL loads without buffering. |
| Input Current | ≤1 µA max - minimizes static power draw and avoids loading upstream logic stages. |
| Propagation Delay | 13–37 ns (typ.) - enables stable operation up to ~10 MHz in synchronous data routing paths. |
| Power Dissipation Cap. | 70 pF - defines dynamic power consumption and AC loading behavior in clocked systems. |
| ESD Rating | 2 kV HBM - meets automotive board-level ESD robustness requirements per ISO 10605. |
Pinout & Package
SN74HC151QDRQ1 is housed in a 16-pin SOIC (D) package with 1.27 mm pitch, JEDEC MS-012AC compliant, moisture sensitivity level 1 (260°C peak reflow), and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Strobe Enable | Active-low global enable; high forces Y = 0, W = 1 regardless of select inputs. |
| 2–4, 13–16 (D0–D7) | Data Inputs | Eight independent digital inputs; only one routed to Y/W based on A/B/C state. |
| 5 (Y) | True Output | Active-high selected data output; logic level matches selected Dn input. |
| 6 (W) | Inverted Output | Complementary to Y; always opposite logic state of Y when enabled. |
| 9–11 (A, B, C) | Select Lines | 3-bit binary address determining which Dn drives Y/W (C = MSB, A = LSB). |
| 8 (GND) | Ground Reference | Logic and power return path; must be low-impedance for noise immunity. |
| 16 (VCC) | Supply Rail | Positive supply for internal logic; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | Qualified per AEC-Q100 Grade 1 - validated for reliability in automotive powertrain and body electronics. |
| Dual Complementary Outputs | Simultaneous Y (true) and W (inverted) outputs eliminate need for external inverters in latch or enable logic. |
| Wide Supply Range | 2 V to 6 V operation allows direct interface with mixed-voltage systems including 3.3 V microcontrollers and legacy 5 V peripherals. |
| Low Input Current | ≤1 µA max input leakage ensures minimal loading on high-impedance sources such as sensor interfaces or pull-up networks. |
| Strobe-Controlled Enable | Asynchronous G input enables/disable multiplexing without affecting select line timing - critical for gated data sampling. |
Applications
| Engine Control Unit (ECU) Signal Routing | Automotive Instrument Cluster Multiplexing |
|---|---|
Use Scenario: Selecting among multiple analog sensor digitized streams (e.g., throttle position, coolant temp, MAP) before ADC input in a compact ECU. IC Role / Device Role / Timing Role: Data selector routing time-multiplexed sensor signals to shared processing resources under MCU control. Use Value: Reduces component count by eliminating discrete analog switches; leverages existing GPIOs for A/B/C/G control with no added timing overhead. | Use Scenario: Consolidating status signals from door modules, lighting controllers, and HVAC into a single serial bus interface in the instrument cluster. IC Role / Device Role / Timing Role: Parallel-to-serial converter generating time-sliced diagnostic data packets synchronized to cluster display refresh. Use Value: Enables deterministic signal arbitration without software polling; supports real-time fault reporting with <100 ns selection jitter. |
| Industrial PLC I/O Expansion | Automotive ADAS Sensor Aggregation |
Use Scenario: Expanding digital input capacity of a base PLC controller by scanning 8 discrete limit switch or proximity sensor lines. IC Role / Device Role / Timing Role: Boolean-function generator implementing custom logic equations via fixed Dn wiring and dynamic A/B/C addressing. Use Value: Provides hardware-level logic flexibility without FPGA or additional microcontroller firmware - reduces cycle time latency by >2 µs vs. software scan. | Use Scenario: Aggregating pre-processed CAN message flags (e.g., radar object detection, camera lane departure alerts) for centralized fusion processor prioritization. IC Role / Device Role / Timing Role: Data source selector enabling priority-based arbitration between redundant sensor inputs in safety-critical ADAS domains. Use Value: Guarantees sub-microsecond switching between sensor streams during fail-safe transitions - meets ASIL-B timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-to-1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC151DR | Same logic function and pinout; commercial-grade (–40°C to 85°C), non-automotive qualified. | Lacks AEC-Q100 qualification; unsuitable for under-hood or safety-critical automotive use. | Select when operating environment remains within commercial temperature range and automotive certification is not required. |
| MC74HC151ADTG | Pin-compatible 16-pin TSSOP; identical electrical specs but different package thermal profile (θJA = 110°C/W vs. 73°C/W). | TSSOP offers smaller footprint but reduced power dissipation margin at high ambient temperatures. | Prefer for space-constrained PCBs where thermal derating below 125°C is acceptable and reflow profile supports fine-pitch handling. |
Compared with SN74HC151DR and MC74HC151ADTG, the SN74HC151QDRQ1 uniquely delivers AEC-Q100 Grade 1 qualification, SOIC thermal performance (73°C/W), and guaranteed operation across –40°C to 125°C - making it the only choice for production automotive control modules requiring long-term reliability validation.
Availability
SN74HC151QDRQ1 is available at Aetrix Electronics and suitable for engine control units, automotive instrument clusters, industrial PLC I/O expansion, and ADAS sensor aggregation requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for SN74HC151QDRQ1 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
Texas Instruments is a global semiconductor company designing analog, embedded processing, and logic ICs for industrial, automotive, and consumer applications with over 90 years of innovation history.
The SN74HC151QDRQ1 belongs to TI's automotive-qualified HC logic family, engineered specifically for robust, low-power combinational logic in harsh-environment vehicle subsystems where reliability and temperature resilience are mandatory.
FAQ
What is the operating temperature range of the SN74HC151QDRQ1?
The SN74HC151QDRQ1 is rated for continuous operation from –40°C to 125°C, meeting AEC-Q100 Grade 1 requirements for automotive under-hood and cabin applications. This range is validated through accelerated life testing and thermal cycling per TI's automotive qualification protocol - ensuring consistent performance in environments like engine control modules and transmission control units where ambient heat exceeds 105°C.
Does the SN74HC151QDRQ1 support 3.3 V logic systems?
Yes, the SN74HC151QDRQ1 supports 3.3 V operation fully - its 2 V to 6 V supply range includes 3.3 V nominal rails, and input thresholds (VIH = 2.0 V min, VIL = 1.0 V max at VCC = 3.3 V) ensure reliable interfacing with 3.3 V microcontrollers and FPGAs without level translation. The SN74HC151QDRQ1 maintains ±4 mA output drive and <100 ns propagation delay at 3.3 V, preserving timing margins in mixed-voltage designs.
How does the strobe (G) input affect output behavior in the SN74HC151QDRQ1?
The strobe (G) input on the SN74HC151QDRQ1 is an active-low enable: when G = low, the device routes the selected Dn input to Y and its complement to W based on A/B/C; when G = high, Y is forced low and W is forced high regardless of select lines. This asynchronous override enables hardware-gated data sampling and simplifies system-level synchronization - for example, disabling multiplexer updates during ADC conversion windows in the SN74HC151QDRQ1-based signal chain.
Is the SN74HC151QDRQ1 pin-compatible with non-automotive variants like SN74HC151DR?
Yes, the SN74HC151QDRQ1 shares identical pinout, electrical characteristics, and functional behavior with SN74HC151DR - both use the same 16-pin SOIC (D) package and follow the same truth table. However, SN74HC151QDRQ1 adds automotive qualification (AEC-Q100), extended temperature screening, and enhanced traceability - meaning SN74HC151DR may be substituted only in non-automotive applications where those qualifications are unnecessary.
What packaging and reel specifications apply to the SN74HC151QDRQ1?
The SN74HC151QDRQ1 ships in a 16-pin SOIC (D) package on tape-and-reel: 2500 units per large reel (330 mm diameter, 16.4 mm width), with Q1 quadrant orientation for automated placement. It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), RoHS-compliant NiPdAu lead finish, and JEDEC-standard marking "HC151Q" - all verified per TI's Package Option Addendum and confirmed in production lot documentation for the SN74HC151QDRQ1.
SN74HC151QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 1 x 8:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74HC151QDRQ1 FAQ
1.How can I place an order for SN74HC151QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC151QDRQ1 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 SN74HC151QDRQ1 reliable?
The price and inventory of SN74HC151QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC151QDRQ1 is usually 5 days.
3.What payment methods are accepted for SN74HC151QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC151QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC151QDRQ1?
SN74HC151QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC151QDRQ1 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 SN74HC151QDRQ1?
For technical support, including SN74HC151QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC151QDRQ1 requirements.
6.How does Aetrix verify that SN74HC151QDRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74HC151QDRQ1 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 SN74HC151QDRQ1 meets industry standards.
7.What is the process for return or replacement of SN74HC151QDRQ1?
All SN74HC151QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC151QDRQ1, 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 SN74HC151QDRQ1 part is unused and in its original packaging.
Return procedure for SN74HC151QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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