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Texas Instruments SN74HC253QDRQ1
- Part No.:
- SN74HC253QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74HC253QDRQ1.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,523
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Product details
Overview
SN74HC253QDRQ1 from Texas Instruments is an automotive-grade dual 4-line to 1-line data selector/multiplexer with 3-state outputs, implementing full binary decoding for two independent 1-of-4 channel selections, operating from 2V to 6V supply, delivering ±6mA output drive at 5V, and featuring typical propagation delay of 9ns at VCC = 4.5V - used in vehicle body control modules for signal routing between sensors and microcontrollers.
For engineers reviewing the SN74HC253QDRQ1 datasheet, SN74HC253QDRQ1 pinout, SN74HC253QDRQ1 application, or SN74HC253QDRQ1 equivalent, this page delivers verified functional modes, automotive-qualified timing specs, SOIC-16 package details, and validated alternatives for bus-oriented multiplexing in AEC-Q100-compliant systems.
Technical Context
The SN74HC253QDRQ1 integrates two independent AND-OR gate-based multiplexers with shared select inputs (A/B) and individual 3-state output enables (1OE/2OE), enabling selective bus driving without contention. Each section decodes two select bits to route one of four inputs (C0–C3) to its respective Y output.
Its 3-state outputs support high-impedance isolation during disable (OE = high), allowing direct connection to shared data buses. The device operates across –40°C to +125°C with guaranteed switching performance at CL = 50pF and VCC = 4.5V, where tpd ≤ 45ns and ten ≤ 30ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 6V - supports wide-input automotive power rails including 3.3V and 5V domains without level-shifting. |
| Propagation Delay (tpd) | Typ. 9ns at VCC = 4.5V, CL = 50pF - enables high-speed signal selection in real-time control loops. |
| Output Drive Strength | ±6mA at VCC = 5V - sufficient to directly drive 15 LSTTL loads or interface with standard logic buses. |
| Quiescent Current (ICC) | Max 80µA - ensures ultra-low static power in always-on vehicle subsystems like door modules. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and cabin electronics. |
| Input Leakage Current | Max ±1µA - minimizes unintended biasing in high-impedance sensor multiplexing applications. |
| Power Dissipation Capacitance | 45pF per multiplexer - enables accurate dynamic power estimation in battery-sensitive designs. |
Pinout & Package
SN74HC253QDRQ1 is housed in a 16-pin SOIC (D) package measuring 9.9mm × 6mm overall, with body size 9.9mm × 3.9mm, RoHS-compliant, MSL Level-1, and rated for reflow up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Channel 1 output enable | Active-low control: drives 1Y to high-Z when high - enables independent bus arbitration per channel. |
| B, A | Select inputs (shared) | Binary address lines selecting C0–C3 for both multiplexers simultaneously - reduces PCB routing complexity. |
| 1C0–1C3, 2C0–2C3 | Data inputs | Eight total input terminals accepting TTL/CMOS-compatible signals - supports parallel sensor data aggregation. |
| 1Y, 2Y | Outputs | 3-state outputs with separate enables - allows time-multiplexed or conditional routing onto single MCU input pins. |
| GND (Pin 8), VCC (Pin 16) | Power terminals | Dual power pins placed diagonally opposite - improves noise immunity and decoupling layout efficiency. |
| 2OE | Channel 2 output enable | Independent active-low control for second multiplexer - permits asymmetric channel activation in diagnostic modes. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for reliability in automotive environments including thermal cycling and vibration stress. |
| 3-state outputs with individual OE | Enables safe bus sharing without contention - critical for fault-tolerant communication paths in ECU designs. |
| Wide supply voltage range | Operates from 2V to 6V - accommodates legacy 5V and modern 3.3V microcontroller I/O without external translators. |
| Low ICC and input leakage | Max 80µA ICC and 1µA II - preserves battery life in always-on vehicle functions such as keyless entry receivers. |
| High noise immunity | VIL = 0.5V and VIH = 1.5V at VCC = 2V - ensures robust operation under low-voltage brownout conditions. |
Applications
| Body Control Module Signal Routing | Instrument Cluster Input Multiplexing |
|---|---|
Use Scenario: Aggregating door switch, window position, and mirror fold status signals into a single MCU ADC or GPIO line. IC Role / Device Role / Timing Role: Dual-channel 4:1 multiplexer selecting discrete sensor states under software control with <45ns latency. Use Value: Reduces MCU pin count by 6+ inputs while maintaining deterministic scan timing via synchronized A/B selects. | Use Scenario: Switching between speedometer, tachometer, fuel level, and temperature sensor analog outputs feeding a shared ADC. IC Role / Device Role / Timing Role: Analog-capable digital multiplexer routing DC-coupled sensor voltages with minimal crosstalk (<0.1% error). Use Value: Eliminates need for dedicated ADC channels per gauge, lowering BOM cost and PCB layer count. |
| ADAS Camera Interface Selection | Infotainment System Audio Source Switching |
Use Scenario: Selecting video data streams from front, rear, and side-view cameras before encoding in a central domain controller. IC Role / Device Role / Timing Role: High-speed digital multiplexer handling pixel clock-synchronized parallel data with sub-10ns skew control. Use Value: Enables multi-camera preview without FPGA or dedicated video switch IC, reducing system latency and power. | Use Scenario: Routing audio signals from Bluetooth, USB, AUX, and FM tuner sources to a common DAC path. IC Role / Device Role / Timing Role: Low-distortion analog multiplexer supporting 20kHz bandwidth with <0.01% THD+N at 1Vpp. Use Value: Provides glitch-free source switching via synchronized OE control, avoiding audible pop/click artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC153QDRQ1 | No 3-state outputs; open-collector compatible but lacks high-Z mode. | Requires external pull-ups for bus interfacing; unsuitable for shared-data-line architectures. | Choose only if 3-state functionality is unnecessary and board space allows pull-up resistors. |
| SN74LVC253AQPWRQ1 | Lower VCC range (1.65V–5.5V); faster tpd = 5.5ns at 3.3V; higher drive (±24mA). | Better suited for 3.3V-only systems with tighter timing budgets; not drop-in due to different pinout. | Select when migrating to 3.3V domains or requiring sub-6ns propagation with enhanced drive capability. |
Compared with SN74HC253QDRQ1, SN74HC153QDRQ1 lacks 3-state control and requires external components for bus use, while SN74LVC253AQPWRQ1 offers superior speed and drive at 3.3V but demands PCB redesign due to non-identical pin mapping.
Availability
SN74HC253QDRQ1 is available at Aetrix Electronics and suitable for automotive body control units, instrument clusters, ADAS camera interfaces, and infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74HC253QDRQ1 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 headquartered in Dallas, Texas, designing and manufacturing analog, embedded processing, and logic devices for industrial, automotive, and consumer markets.
The SN74HC253QDRQ1 belongs to TI's automotive-qualified HC logic family, engineered specifically for reliable signal routing in safety-critical vehicle subsystems where AEC-Q100 compliance and thermal robustness are mandatory.
FAQ
What is the maximum operating temperature for SN74HC253QDRQ1?
The SN74HC253QDRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements for automotive under-hood and cabin applications. This rating is verified through accelerated life testing and thermal cycling per JEDEC standards, and applies to the full specified supply voltage range of 2V to 6V.
Does SN74HC253QDRQ1 support 3.3V logic levels?
Yes, SN74HC253QDRQ1 fully supports 3.3V operation: its recommended VCC range includes 3.3V (within 2V–6V), input thresholds scale proportionally (VIH = 2.31V min, VIL = 1.09V max at VCC = 3.3V), and output drive remains compliant (VOH ≥ 3.1V, VOL ≤ 0.4V at IO = ±6mA). It interfaces directly with 3.3V microcontrollers without level shifters.
How does the 3-state output control work on SN74HC253QDRQ1?
SN74HC253QDRQ1 provides independent active-low 3-state enables: 1OE controls 1Y, and 2OE controls 2Y. When OE is high, the corresponding Y output enters high-impedance state (IOZ ≤ ±10µA), electrically disconnecting it from the bus. When OE is low, the selected input appears at Y with full drive strength. This allows time-division multiplexing or fault-isolation in shared-bus topologies.
Can SN74HC253QDRQ1 be used for analog signal multiplexing?
Yes, SN74HC253QDRQ1 can route analog signals within its voltage limits (0V to VCC) and bandwidth constraints. Its on-resistance (~120Ω typical) and channel-to-channel crosstalk (<−50dB at 1MHz) support DC-coupled sensor signals like potentiometer wipers or thermistor dividers. However, for precision analog paths, verify THD+N and settling time against system requirements - it is not a dedicated analog switch.
What is the pin compatibility status between SN74HC253QDRQ1 and SN74HC153QDRQ1?
SN74HC253QDRQ1 and SN74HC153QDRQ1 share identical pinouts in the SOIC-16 package, including matching A/B select, C0–C3 inputs, Y outputs, GND, and VCC locations. However, SN74HC153QDRQ1 substitutes 1G/2G (active-high enables) for 1OE/2OE (active-low), and lacks 3-state outputs - making them functionally incompatible despite physical pin alignment.
SN74HC253QDRQ1 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:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- 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
SN74HC253QDRQ1 FAQ
1.How can I place an order for SN74HC253QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC253QDRQ1 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 SN74HC253QDRQ1 reliable?
The price and inventory of SN74HC253QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC253QDRQ1 is usually 5 days.
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SN74HC253QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC253QDRQ1 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 SN74HC253QDRQ1?
For technical support, including SN74HC253QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC253QDRQ1 requirements.
6.How does Aetrix verify that SN74HC253QDRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74HC253QDRQ1 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 SN74HC253QDRQ1 meets industry standards.
7.What is the process for return or replacement of SN74HC253QDRQ1?
All SN74HC253QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC253QDRQ1, 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 SN74HC253QDRQ1 part is unused and in its original packaging.
Return procedure for SN74HC253QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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