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Texas Instruments SN74HC253NG4
- Part No.:
- SN74HC253NG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
SN74HC253NG4.pdf
- Description:
- IC MULTIPLEXER 2 X 4:1 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
SN74HC253NG4 from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer with 3-state outputs, implementing full binary decoding for independent channel selection. It operates across 2 V–6 V supply, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 9 ns, and supports bus-organized systems via strobe-controlled high-impedance outputs. Used in digital logic routing, parallel-to-serial conversion, and address/data multiplexing in embedded control units.
For engineers reviewing the SN74HC253NG4 datasheet, SN74HC253NG4 pinout, SN74HC253NG4 application, or SN74HC253NG4 equivalent, key selection criteria include its dual-channel 3-state output architecture, wide VCC range (2–6 V), low ICC (80 μA max), 16-pin PDIP package compatibility, and functional equivalence to 'HC153 with enhanced output drive and timing performance.
Technical Context
The SN74HC253NG4 integrates two independent 4:1 multiplexers sharing common select inputs (A, B) but featuring separate 3-state output-enable (OE) controls per channel. Each section uses AND-OR logic with inverters and drivers to decode binary inputs and route one of four data lines (C0–C3) to its Y output.
Its 3-state outputs enable direct bus interfacing: when OE is high, the output enters high-impedance state; when OE is low, the selected input drives Y to logic high or low with ±6 mA capability at 5 V and tpd ≤ 38 ns (VCC = 6 V, CL = 50 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system integration and legacy 5 V logic compatibility |
| Propagation Delay (tpd) | Typ. 9 ns at VCC = 4.5 V, CL = 50 pF - enables high-speed data routing in real-time control paths |
| Output Drive Capability | ±6 mA at VCC = 5 V - directly drives up to 15 LSTTL loads without external buffers |
| Quiescent Current (ICC) | 80 μA max - suitable for low-power battery-backed or energy-conscious designs |
| Input Leakage Current | 1 μA max - ensures stable logic levels with high-impedance source interfaces |
| 3-State Enable Timing (ten/tdis) | 21 ns (min) / 31 ns (max) at VCC = 6 V - guarantees clean bus arbitration with minimal contention window |
Pinout & Package
SN74HC253NG4 is supplied in a 16-pin plastic dual in-line package (PDIP), body size 19.31 mm × 6.35 mm, with through-hole mounting and standard 0.1-inch lead pitch. Pin numbering follows JEDEC MS-001, with Pin 1 located at top-left corner marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | Y1, Y2 Output | 3-state multiplexed outputs - each drives selected C0–C3 input when respective OE is low |
| 2, 14 | OE1, OE2 | Independent output-enable controls - high = high-Z, low = active drive |
| 3–6, 10–13 | C0–C3 (Ch1), C0–C3 (Ch2) | Data inputs - two sets of four independent channels routed by shared A/B selects |
| 7, 16 | GND, VCC | Power terminals - require local 0.1 μF bypass capacitor for noise immunity |
| 8, 9 | A, B | Binary select inputs - common to both multiplexers, determine which Cx feeds Y |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4:1 multiplexers | Enables simultaneous routing of two data streams using shared select logic - reduces component count in multi-channel I/O expanders |
| Strobe-controlled 3-state outputs | Permits time-multiplexed bus sharing without external tri-state logic - essential for compact address/data bus architectures |
| Wide 2–6 V operating range | Eliminates level-shifting in mixed-supply systems (e.g., 3.3 V MCU interfacing to 5 V peripherals) |
| Low power consumption (80 μA ICC) | Supports always-on monitoring functions in standby modes without compromising system battery life |
| High-current outputs (±6 mA @ 5 V) | Drives capacitive loads up to 50 pF within timing specs - simplifies interface to LEDs, relays, or legacy TTL subsystems |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Peripheral Multiplexing |
|---|---|
Use Scenario: Consolidating multiple sensor inputs (temperature, pressure, flow) onto a single microcontroller ADC channel via time-sliced sampling. IC Role / Device Role / Timing Role: Dual 4:1 multiplexer routes analog front-end signals under MCU GPIO control; 3-state outputs prevent channel crosstalk during switching. Use Value: Reduces PCB footprint and BOM cost versus discrete analog switches while maintaining <10 ns channel-to-channel skew. | Use Scenario: Sharing a single UART or SPI data line among four peripheral devices (EEPROM, display driver, sensor hub, actuator controller). IC Role / Device Role / Timing Role: Acts as bidirectional data path selector; OE pins synchronized with peripheral CS signals to isolate inactive devices. Use Value: Enables hardware-level protocol arbitration without firmware overhead, preserving MCU cycle budget for real-time tasks. |
| Legacy System Bus Interface | Digital Test Equipment Signal Routing |
Use Scenario: Adapting modern 3.3 V FPGA I/O to legacy 5 V backplane buses with strict timing and drive requirements. IC Role / Device Role / Timing Role: Level-tolerant multiplexer with 5 V-compatible outputs; 3-state control aligns with bus grant/acknowledge handshake. Use Value: Eliminates need for discrete level shifters and bus transceivers - maintains signal integrity at 25 MHz bus clock rates. | Use Scenario: Configurable stimulus/response path selection in automated test fixtures verifying multi-port communication ICs. IC Role / Device Role / Timing Role: Reconfigurable signal router controlled by test sequencer; dual channels support simultaneous DUT stimulus and response capture. Use Value: Achieves sub-10 ns path switching repeatability - critical for jitter-sensitive high-speed serial compliance testing. |
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 |
|---|---|---|---|
| SN74HC153N | No 3-state outputs; open-collector compatible but lacks high-Z disable mode | Requires external pull-ups for bus use; unsuitable for bidirectional or shared-bus topologies | Select SN74HC153N only for simple point-to-point routing where output isolation is unnecessary |
| CD74HC253E | Identical logic function and pinout; same 16-pin PDIP package; identical electrical specs per datasheet | No functional difference - direct second-source option with identical thermal and timing behavior | CD74HC253E offers supply chain diversification without design change or requalification |
Compared with SN74HC153N, SN74HC253NG4 adds essential 3-state control for bus arbitration; compared with CD74HC253E, it provides identical performance with Texas Instruments' manufacturing traceability and extended product longevity assurance.
Availability
SN74HC253NG4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller peripheral multiplexing, legacy system bus interface, and digital test equipment signal routing requiring stable component supply across long-lifecycle programs.
Supply support for SN74HC253NG4 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 leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in high-reliability components.
The SN74HC253NG4 belongs to TI's 74HC logic family, designed for robust, low-power digital signal routing in industrial, automotive, and communications equipment where timing precision and supply voltage flexibility are critical.
FAQ
What is the maximum operating temperature range for SN74HC253NG4?
The SN74HC253NG4 is rated for operation from –40°C to +85°C ambient temperature, matching the commercial-grade specification of the 74HC logic family. This range is validated per TI's Recommended Operating Conditions and supports deployment in industrial control cabinets, automotive under-hood environments, and outdoor embedded systems without derating.
Does SN74HC253NG4 require external pull-up resistors on its outputs?
No, SN74HC253NG4 does not require external pull-up resistors on its outputs because it features active-drive 3-state outputs capable of sourcing and sinking ±6 mA at 5 V. Pull-ups are only needed if interfacing with open-drain systems or specific legacy bus standards that mandate weak-high default states - not applicable to standard SN74HC253NG4 operation.
Can SN74HC253NG4 operate reliably at 3.3 V supply voltage?
Yes, SN74HC253NG4 operates reliably at 3.3 V supply voltage, as confirmed by TI's Recommended Operating Conditions (VCC min = 2 V, max = 6 V) and Electrical Characteristics tables. At 3.3 V, VOH ≥ 3.15 V and VOL ≤ 0.1 V under load, ensuring full compatibility with 3.3 V CMOS and TTL logic families without level translation.
How are the select inputs A and B used across both multiplexer sections in SN74HC253NG4?
In SN74HC253NG4, select inputs A and B are shared between both 4:1 multiplexer sections - they simultaneously determine which of the four data inputs (C0–C3) is routed to each Y output. This architecture enables synchronized channel selection across dual paths, ideal for stereo audio routing, differential signal switching, or mirrored I/O control without additional GPIO overhead.
Is SN74HC253NG4 RoHS compliant and lead-free?
Yes, SN74HC253NG4 is RoHS compliant and lead-free, as verified in TI's Package Option Addendum: material type specifies "NIPDAU" (nickel-palladium-gold) lead finish, MSL rating is Level-1-260°C-UNLIM, and RoHS status is marked "Yes". The G4 suffix explicitly denotes TI's green packaging standard meeting EU Directive 2011/65/EU requirements.
SN74HC253NG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
SN74HC253NG4 FAQ
1.How can I place an order for SN74HC253NG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC253NG4 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 SN74HC253NG4 reliable?
The price and inventory of SN74HC253NG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC253NG4 is usually 5 days.
3.What payment methods are accepted for SN74HC253NG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC253NG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC253NG4?
SN74HC253NG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC253NG4 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 SN74HC253NG4?
For technical support, including SN74HC253NG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC253NG4 requirements.
6.How does Aetrix verify that SN74HC253NG4 is sourced from the original manufacturer or authorized distributors?
All SN74HC253NG4 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 SN74HC253NG4 meets industry standards.
7.What is the process for return or replacement of SN74HC253NG4?
All SN74HC253NG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC253NG4, 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 SN74HC253NG4 part is unused and in its original packaging.
Return procedure for SN74HC253NG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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