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NXP Semiconductors 74HCT253N,652
- Part No.:
- 74HCT253N,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
74HCT253N,652.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,630
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Product details
Overview
74HCT253N,652 from NXP Semiconductors is a dual 4-input CMOS multiplexer with 3-state outputs, pin-compatible with LSTTL logic. It implements two independent 2-pole, 4-position data switches controlled by shared select inputs (S0, S1), each with dedicated active-low output enable (1OE, 2OE). Designed for bus-oriented systems, it operates from 4.5 V to 5.5 V across −40 °C to +125 °C and delivers 17 ns typical propagation delay at 5 V.
For engineers reviewing the 74HCT253N,652 datasheet, 74HCT253N,652 pinout, 74HCT253N,652 application, or 74HCT253N,652 equivalent, this device serves as a TTL-level-compatible data routing solution in industrial control I/O expansion, test equipment signal switching, and legacy system bus interfacing where 3-state drive and deterministic select timing are required.
Technical Context
The 74HCT253N,652 integrates two identical 4:1 multiplexer channels sharing S0/S1 select lines but featuring independent 3-state output enables (1OE, 2OE), enabling selective channel activation without bus contention. Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) ensure direct interfacing with standard 5 V logic families.
Each channel routes one of four data inputs (e.g., 1I0–1I3) to its corresponding output (1Y or 2Y) based on binary S0/S1 state, with outputs forced to high-impedance when respective nOE is HIGH. The non-inverting data path preserves signal polarity, and ESD protection exceeds 2000 V HBM per JESD22-A114F.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL and mixed-voltage systems without level shifting. |
| Propagation Delay | 17 ns typ @ 5 V, CL = 15 pF - Enables reliable operation in high-speed digital control loops up to ~30 MHz clock-equivalent rates. |
| Output Drive | ±6 mA @ VOH/VOL - Sufficient to drive standard TTL loads and multiple CMOS inputs without external buffering. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max @ VCC = 5 V - Guarantees robust noise margin and direct connection to 5 V microcontroller GPIOs. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive modules, industrial PLCs, and extended-range instrumentation. |
| Power Dissipation Cap. | 55 pF per multiplexer - Used to calculate dynamic power (PD = CPD × VCC² × fi × N), critical for thermal budgeting in dense PCB layouts. |
Pinout & Package
DIP16 package (SOT38-4): 16-pin plastic dual in-line package with 300 mil width, through-hole mounting, and industry-standard 0.1″ pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enable controls - Assert LOW to activate respective 1Y or 2Y output; HIGH forces high-impedance state for bus isolation. |
| 2, 14 | S1, S0 | Common binary select inputs - Determine which of four data sources (I0–I3) is routed to Y output (00→I0, 01→I1, 10→I2, 11→I3). |
| 3–6, 10–13 | 1I0–1I3, 2I0–2I3 | Data input terminals - Eight total inputs grouped into two sets of four; each set feeds one multiplexer channel. |
| 7, 9 | 1Y, 2Y | 3-state multiplexer outputs - Deliver selected input data; tri-stated when corresponding OE is HIGH. |
| 8 | GND | Ground reference - Must be connected to system 0 V plane; decoupling capacitor recommended near pin. |
| 16 | VCC | Positive supply - Requires stable 4.5–5.5 V rail; bypass capacitor (100 nF ceramic) essential at package pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input compatibility | Accepts standard 5 V TTL logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), eliminating need for level translators in mixed-logic systems. |
| Independent 3-state control | Dual OE pins allow selective activation of either multiplexer output, enabling time-multiplexed bus sharing or fault-isolated channel operation. |
| High noise immunity | Guaranteed 0.4 V input hysteresis margin at 5 V supply ensures reliable switching in electrically noisy industrial environments. |
| JEDEC Std. 7A compliance | Meets industry-standard timing, voltage, and interface requirements for interoperability with legacy and modern 5 V logic families. |
| ESD robustness | HBM rating > 2000 V and MM rating > 200 V reduce risk of handling damage during assembly and field service. |
Applications
| Industrial I/O Expansion | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Routing sensor signals from multiple analog front-ends to a single ADC in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel data selector that synchronously samples four temperature or pressure inputs under microcontroller command via S0/S1. Use Value: Reduces component count versus discrete analog switches while maintaining deterministic 17 ns propagation delay for precise sampling alignment. |
Use Scenario: Switching between calibration references and DUT signals in benchtop multimeters or signal analyzers. IC Role / Device Role / Timing Role: 3-state multiplexer isolating measurement paths during auto-ranging or self-test sequences using independent OE control. Use Value: Prevents signal leakage between channels during reconfiguration, ensuring measurement integrity without mechanical relay wear. |
| Legacy System Bus Interface | Microcontroller Peripheral Multiplexing |
Use Scenario: Sharing a single UART or SPI bus among multiple peripheral ICs in retro-computing or industrial HMIs. IC Role / Device Role / Timing Role: Bidirectional data router enabling software-selectable peripheral access via shared bus lines and OE-gated tristate outputs. Use Value: Eliminates need for external bus transceivers while preserving TTL-compatible drive strength and noise margins. |
Use Scenario: Selecting between multiple encoder quadrature inputs or PWM feedback signals in motor control firmware. IC Role / Device Role / Timing Role: Hardware-based input source selector synchronized to MCU timer interrupts, reducing CPU overhead in real-time loops. Use Value: Enables sub-microsecond input switching latency, critical for closed-loop response times below 100 µs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT253N | Identical pinout and DC/AC specs; TI version qualified to different AEC-Q200 stress profiles and shipped in distinct tape/reel packaging. | No functional difference in board-level integration; TI variant has broader automotive qualification history but same industrial temp range. | Preferred for TI-centric BOMs or where distributor stock favors TI branding; no layout or firmware changes required. |
| 74VHC253N | Higher supply range (2–5.5 V), lower ICC (1 μA typ), but TTL input thresholds not guaranteed - requires external pull-ups for 5 V logic compatibility. | Not drop-in compatible for TTL-driven systems; suitable only where controller GPIOs can meet CMOS VIH/VIL or where level-shifting is acceptable. | Select only when ultra-low static power is prioritized over direct TTL interface; verify input threshold behavior in target operating conditions. |
Compared with SN74HCT253N, the 74HCT253N,652 offers identical electrical performance and pin compatibility but differs in traceability and logistics chain; versus 74VHC253N, it provides guaranteed TTL input compatibility at the cost of slightly higher quiescent current, making it the preferred choice for legacy 5 V system upgrades.
Availability
74HCT253N,652 is available at Aetrix Electronics and suitable for industrial I/O expansion, automated test equipment, and legacy system bus interfacing requiring stable component supply across extended temperature ranges.
Supply support for 74HCT253N,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The 74HCT253N,652 belongs to NXP's legacy HC/HCT logic family, engineered for seamless interoperability with TTL systems while delivering CMOS power efficiency and noise immunity in industrial control and instrumentation.
FAQ
What is the maximum operating supply voltage for the 74HCT253N,652?
The 74HCT253N,652 has an absolute maximum supply voltage of +7.0 V, but its recommended operating range is strictly 4.5 V to 5.5 V per the datasheet. Operating above 5.5 V risks violating input/output voltage limits and may cause accelerated parametric drift or latch-up. For reliable long-term function, maintain VCC within the 4.5–5.5 V window specified in Table 5 of the 74HC_HCT253 datasheet.
Does the 74HCT253N,652 support hot insertion into a live 5 V bus?
No, the 74HCT253N,652 does not support hot insertion. Its absolute maximum ratings specify no tolerance for VCC ramping after other pins are biased, and the input clamping current limit (±20 mA) is insufficient to safely absorb bus transients during live mating. Always power-cycle the system before inserting or removing the 74HCT253N,652 to prevent damage to internal protection diodes or connected devices.
Can both outputs of the 74HCT253N,652 be enabled simultaneously without contention?
Yes, both 1Y and 2Y outputs of the 74HCT253N,652 can be enabled simultaneously because they are electrically isolated channels sharing only the S0/S1 select lines. As long as their respective 1OE and 2OE pins are held LOW, both outputs drive independently - no internal contention occurs. However, external bus wiring must ensure outputs connect to separate nets or use wired-OR configurations with appropriate pull-ups.
What is the input capacitance of the 74HCT253N,652 and how does it affect high-frequency routing?
The 74HCT253N,652 has a typical input capacitance (CI) of 3.5 pF per pin, as specified in Table 6. At 10 MHz, this contributes ~0.55 Ω capacitive reactance, making it negligible for most PCB traces under 10 cm. However, in >50 MHz edge-rate designs, cumulative capacitance across all eight data inputs may load driving sources; keep trace lengths short and avoid daisy-chaining multiple 74HCT253N,652 devices on the same select bus.
How does the 74HCT253N,652 behave when S0 and S1 are left floating?
Leaving S0 or S1 floating on the 74HCT253N,652 causes undefined output selection due to TTL-input susceptibility to noise and leakage currents. The datasheet specifies no internal pull resistors; floating inputs may settle near the 1.3 V measurement threshold (Table 8), resulting in metastable or oscillating outputs. Always tie unused S0/S1 pins to VCC or GND via ≤10 kΩ resistors to guarantee deterministic channel selection in the 74HCT253N,652.
74HCT253N,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 6mA, 6mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
74HCT253N,652 FAQ
1.How can I place an order for 74HCT253N,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT253N,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 74HCT253N,652 reliable?
The price and inventory of 74HCT253N,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT253N,652 is usually 5 days.
3.What payment methods are accepted for 74HCT253N,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT253N,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT253N,652?
74HCT253N,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT253N,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 74HCT253N,652?
For technical support, including 74HCT253N,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT253N,652 requirements.
6.How does Aetrix verify that 74HCT253N,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT253N,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 74HCT253N,652 meets industry standards.
7.What is the process for return or replacement of 74HCT253N,652?
All 74HCT253N,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT253N,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 74HCT253N,652 part is unused and in its original packaging.
Return procedure for 74HCT253N,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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