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Texas Instruments CD74AC253M96
- Part No.:
- CD74AC253M96
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74AC253M96.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
CD74AC253M96 from Texas Instruments is a dual 4-input three-state multiplexer in SOIC-16 package, implementing Advanced CMOS logic with 1.5V–5.5V supply operation, ±24mA output drive, and 6.3ns typical propagation delay at 5V/25°C/50pF. It selects one of four data inputs per section using shared S0/S1 select lines and enables high-impedance outputs via independent 1OE/2OE controls - used in digital signal routing for industrial control I/O expansion.
For engineers reviewing the CD74AC253M96 datasheet, CD74AC253M96 pinout, CD74AC253M96 application, or CD74AC253M96 equivalent, key selection criteria include its wide VCC range (1.5–5.5V), balanced noise immunity at 30% of supply, SCR-latchup resistance, ESD tolerance (>2kV), and compatibility with FAST™-level fanout while consuming significantly less power.
Technical Context
The CD74AC253M96 integrates two independent 4:1 multiplexers sharing common S0/S1 select inputs and featuring separate three-state output enables (1OE, 2OE). Its Advanced CMOS process delivers TTL-compatible input thresholds across 1.5V–5.5V operation while maintaining rail-to-rail output swing and low quiescent current (≤160µA over full temperature range).
Propagation delays are balanced between select-to-output (tPLH/tPHL ≤20ns at 5V) and data-input-to-output paths (≤12.1ns at 5V), with output enable/disable delays ≤10.5ns. Input and output capacitances are specified at 10pF and 15pF respectively, supporting clean switching into 50Ω transmission lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 5.5V - supports mixed-voltage system interfacing and battery-powered logic |
| Propagation Delay (S0/S1 → Y) | 5.2ns (typ) / 18.2ns (max) at 5V - enables high-speed address/data selection in real-time controllers |
| Output Drive Current | ±24mA - drives 15 FAST™ ICs or directly terminates 50Ω transmission lines without external buffers |
| Input Capacitance | 10pF - minimizes loading on upstream drivers and preserves signal integrity in dense PCB layouts |
| ESD Protection | >2kV per MIL-STD-883 Method 3015 - ensures robust handling in automated assembly and field-replaceable modules |
| Operating Temperature | -55°C to +125°C - qualified for aerospace, automotive under-hood, and industrial motor drive environments |
| Three-State Leakage | ±10µA max at -55°C to +125°C - prevents unintended current paths during bus arbitration or power sequencing |
Pinout & Package
CD74AC253M96 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant NiPdAu lead finish. The package supports reflow soldering per Level-1-260°C-UNLIM MSL rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-HIGH output enable controls - disables respective Y outputs to high-impedance state when HIGH |
| 2, 3, 4, 5 | 1I0–1I3 | Data inputs for first multiplexer section - routed to 1Y based on S0/S1 state |
| 6, 10, 11, 12 | 2I0–2I3 | Data inputs for second multiplexer section - routed to 2Y based on S0/S1 state |
| 7 | GND | Ground reference for all internal logic and I/O - must be low-impedance connection to minimize noise coupling |
| 8, 16 | 1Y, 2Y | Three-state outputs - reflect selected input when corresponding OE is LOW; high-Z otherwise |
| 9, 13 | S0, S1 | Common binary select lines - determine which of four inputs passes to each Y output (00→I0, 01→I1, etc.) |
| 14 | VCC | Positive supply - powers both sections; decoupling capacitor required within 1cm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range Operation | 1.5V–5.5V enables interoperability with 1.8V, 3.3V, and 5V logic families without level shifters |
| Balanced Propagation Delays | Matched tPLH/tPHL across all paths reduces timing skew in synchronous data routing applications |
| SCR-Latchup Resistant Process | Prevents destructive latch-up during voltage transients or hot-insertion events in modular systems |
| Buffered Inputs | Reduces capacitive loading on upstream drivers and improves noise margin in noisy industrial environments |
| High Fanout Capability | ±24mA drive supports direct connection to 15 FAST™ loads or 50Ω transmission lines without buffering |
Applications
| Industrial PLC I/O Expansion | Automotive Sensor Multiplexing |
|---|---|
Use Scenario: Central controller routes analog/digital sensor signals from multiple zones to ADC or MCU inputs using time-shared sampling. IC Role / Device Role / Timing Role: Dual 4:1 multiplexer provides independent channel selection for two sensor groups, synchronized by shared S0/S1 clock edges. Use Value: Eliminates need for two discrete mux ICs; 125°C rating ensures reliability in engine bay or powertrain control units. | Use Scenario: In-vehicle infotainment head unit consolidates button press, rotary encoder, and touch panel inputs onto a single GPIO port. IC Role / Device Role / Timing Role: Acts as bidirectional signal router - selects active input source while isolating unused lines via three-state outputs. Use Value: ±24mA drive handles mechanical switch bounce and long trace capacitance; ESD protection exceeds ISO 10605 requirements. |
| Test Equipment Signal Switching | Communications Baseband Routing |
Use Scenario: Automated test fixture switches between DUT signal paths during functional validation, requiring glitch-free transitions. IC Role / Device Role / Timing Role: Enables precise timing-controlled signal selection with sub-20ns propagation delay and simultaneous enable/disable of both sections. Use Value: Balanced delays prevent race conditions; high-impedance state eliminates crosstalk during reconfiguration. | Use Scenario: Cellular base station board routes I/Q data streams between RF transceivers and FPGA-based modems under dynamic protocol changes. IC Role / Device Role / Timing Role: Provides deterministic path selection for parallel 4-bit data buses with minimal added latency and no hold-time violations. Use Value: 10pF input capacitance preserves signal edge rate; 50Ω line drive capability maintains signal integrity up to 100MHz. |
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 |
|---|---|---|---|
| SN74AC253DR | Same AC logic family, identical pinout and electrical specs; TI's newer SOIC-16 marking and packaging revision | No functional difference; compatible in existing designs with same thermal and layout constraints | Select SN74AC253DR for new designs requiring TI's current production release and extended lifecycle support |
| 74LVC253PW | Lower VCC range (1.65–3.6V); 3.6V absolute max; 24mA drive only at 3.3V; higher VOL at 1.8V | Not suitable for 5V or mixed 1.8V/5V systems; requires level translation if interfacing with legacy 5V peripherals | Choose 74LVC253PW only in fully 1.8V/2.5V/3.3V domains where lower static power is prioritized over voltage flexibility |
Compared with CD74AC253M96, SN74AC253DR offers identical performance with updated manufacturing traceability, while 74LVC253PW trades voltage range and 5V compatibility for reduced dynamic power in low-voltage-only systems - making CD74AC253M96 the optimal choice for industrial and automotive applications demanding wide supply tolerance and robust ESD immunity.
Availability
CD74AC253M96 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive sensor multiplexing, test equipment signal switching, and communications baseband routing requiring stable component supply across extended temperature ranges.
Supply support for CD74AC253M96 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, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and enterprise systems.
The CD74AC253M96 belongs to TI's legacy High-Speed CMOS (HCMOS) logic portfolio, designed specifically for high-reliability digital signal routing in harsh environments where wide voltage operation, latch-up immunity, and ESD robustness are critical.
FAQ
What is the maximum operating temperature range for CD74AC253M96?
The CD74AC253M96 is rated for operation from -55°C to +125°C, validated across all electrical parameters per the datasheet's "Operating Conditions" table. This extended range qualifies CD74AC253M96 for use in aerospace avionics bays, automotive powertrain control modules, and industrial motor drives exposed to ambient thermal extremes without derating.
Does CD74AC253M96 support 3.3V logic interfaces?
Yes, CD74AC253M96 fully supports 3.3V operation: its AC-type specification guarantees VIH ≥2.1V and VIL ≤0.9V at VCC = 3V, with VOH ≥2.9V and VOL ≤0.1V under ±24mA load. This ensures reliable interfacing with 3.3V microcontrollers, FPGAs, and peripheral ICs without level-shifting circuitry.
Can CD74AC253M96 drive 50Ω transmission lines directly?
Yes, CD74AC253M96 is explicitly characterized to drive 50Ω transmission lines, verified per Note 7 in the datasheet: output drive capability meets minimum 50Ω line-drive requirements at 85°C and 75Ω at 125°C. Its ±24mA output current and low output impedance enable clean edge transmission without external termination resistors.
Is CD74AC253M96 pin-compatible with CD74ACT253M96?
Yes, CD74AC253M96 and CD74ACT253M96 share identical SOIC-16 pinouts, terminal functions, and package dimensions. However, ACT variants require 4.5V–5.5V supply and exhibit faster propagation delays (e.g., 5.7ns vs. 5.2ns typ at 5V), while AC types support 1.5V–5.5V and offer better noise immunity at lower voltages.
What is the purpose of the buffered inputs in CD74AC253M96?
The buffered inputs in CD74AC253M96 reduce effective input capacitance to 10pF and isolate internal logic from external trace impedance variations. This improves noise rejection in electrically noisy environments (e.g., motor drives), stabilizes timing margins under capacitive loading, and prevents signal degradation when driving long PCB traces - a design feature confirmed in the "Features" section of the SCHS247A datasheet.
CD74AC253M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 75mA, 75mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74AC253M96 FAQ
1.How can I place an order for CD74AC253M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74AC253M96 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 CD74AC253M96 reliable?
The price and inventory of CD74AC253M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74AC253M96 is usually 5 days.
3.What payment methods are accepted for CD74AC253M96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74AC253M96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74AC253M96?
CD74AC253M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74AC253M96 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 CD74AC253M96?
For technical support, including CD74AC253M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74AC253M96 requirements.
6.How does Aetrix verify that CD74AC253M96 is sourced from the original manufacturer or authorized distributors?
All CD74AC253M96 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 CD74AC253M96 meets industry standards.
7.What is the process for return or replacement of CD74AC253M96?
All CD74AC253M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74AC253M96, 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 CD74AC253M96 part is unused and in its original packaging.
Return procedure for CD74AC253M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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