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NXP Semiconductors 74HCT4514PW118
- Part No.:
- 74HCT4514PW118
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT4514PW118.pdf
- Description:
- NOW NEXPERIA 74HCT4514PW - DECOD
- Quantity:
- Payment:
- Shipping:
Inventory:4,947
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Product details
Overview
74HCT4514PW118 from Nexperia is a 4-to-16 line decoder/demultiplexer with input latches, designed for address decoding and digital multiplexing in TTL-level interfaced systems. It features four binary-weighted address inputs (A0–A3), latch enable (LE), active-low enable (E), and 16 active-high outputs (Q0–Q15). Its operation supports stable output hold via latching and enables demultiplexing with E as data input.
For engineers reviewing the 74HCT4514PW118 datasheet, 74HCT4514PW118 pinout, 74HCT4514PW118 application, or 74HCT4514PW118 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), propagation delay of 30 ns (max) at 4.5 V, latch functionality, TSSOP24 package constraints, and −40 °C to +125 °C operating range.
Technical Context
The 74HCT4514PW118 implements a two-stage logic architecture: first, four address bits are captured into edge-triggered transparent latches when LE is HIGH; second, the latched values drive a 4-to-16 binary decoder whose outputs activate only when E is LOW. Latch state is independent of E, enabling asynchronous data capture and synchronous output gating.
Its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) ensure interoperability with legacy 5 V TTL families, while CMOS output stages deliver VOH ≥ 3.7 V and VOL ≤ 0.4 V at IO = ±4 mA, supporting robust noise margins and fan-out to standard logic loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-voltage systems without level-shifting. |
| Input threshold (VIH/VIL) | 2.0 V / 0.8 V - guarantees reliable recognition of TTL logic levels across full temperature range. |
| Propagation delay (tpd) | 55 ns max (An→Qn, VCC = 4.5 V) - defines maximum timing budget for address decode paths in high-speed control logic. |
| Output drive (IO) | ±4 mA - supports direct interface to multiple 74-series inputs or LED indicators without external buffers. |
| Operating temperature | −40 °C to +125 °C - validated for industrial and extended-temperature embedded applications. |
| Power dissipation capacitance | 45 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) in clocked systems. |
Pinout & Package
TSSOP24 package (SOT355-1), 4.4 mm body width, 24-pin plastic thin shrink small outline, surface-mount compatible with standard reflow profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | LE | Latch enable input (active HIGH); controls transparency vs. hold mode of address latches. |
| 2–3, 21–22 | A0–A3 | Binary-weighted address inputs; determine which of 16 outputs activates when E is LOW. |
| 4, 6–11, 13–16, 18–20, 23 | Q0–Q15, E | 16 active-HIGH decoded outputs (Q0–Q15) and active-LOW enable (E); E serves as data input in demux mode. |
| 12 | GND | Ground reference (0 V) for all internal logic and I/O; requires low-impedance PCB connection. |
| 24 | VCC | Positive supply (4.5–5.5 V); powers CMOS core and output drivers; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Input latches with LE control | Enables asynchronous address capture and synchronous output activation-critical for glitch-free bus arbitration and memory mapping. |
| TTL-compatible input thresholds | Eliminates need for external level shifters when interfacing with legacy 5 V TTL microcontrollers or peripheral ICs. |
| 16-line demultiplexing capability | Allows single data line (E) to be routed to one of 16 destinations under 4-bit address control-reducing signal routing complexity. |
| Clamp diodes on all inputs | Permits use of current-limiting resistors for overvoltage protection up to VCC + 0.5 V-simplifying robust I/O design in noisy environments. |
Applications
| Memory Address Decoding | Digital Signal Routing |
|---|---|
Use Scenario: Selecting one of 16 memory banks or peripheral registers in an 8-bit microcontroller system using A0–A3 address lines. IC Role / Device Role / Timing Role: Decoder translates CPU address bits into individual chip-select signals; latching isolates address setup from bus contention. Use Value: Enables deterministic, race-free bank selection with no external glue logic-reducing BOM count and PCB area. | Use Scenario: Distributing a serial data stream (applied to E) across 16 parallel test points or sensor channels in automated test equipment. IC Role / Device Role / Timing Role: Demultiplexer routes time-multiplexed data under address control; LE synchronizes channel switching to system clock edges. Use Value: Provides precise, low-jitter channel assignment without FPGA resources or software overhead. |
| Hexadecimal-to-BCD Conversion | Industrial I/O Expansion |
Use Scenario: Converting 4-bit hex codes from a keypad or DIP switch into 16-line BCD-compatible outputs for driving 7-segment displays via driver ICs. IC Role / Device Role / Timing Role: Decoder maps each hex digit (0–F) to a unique output line; latched inputs prevent display flicker during keypress transitions. Use Value: Delivers clean, bounce-free digit selection-eliminating need for debounce firmware or RC filters. | Use Scenario: Expanding GPIO count of a PLC controller by assigning discrete outputs (Q0–Q15) to solenoids, relays, or status LEDs. IC Role / Device Role / Timing Role: Output latch holds actuator states during scan cycle interruptions; E enables/disables entire output group synchronously. Use Value: Ensures fail-safe output retention during controller reset or communication loss-meeting IEC 61131-3 safety expectations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-to-16 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4514PW | CMOS input thresholds (VIH = 3.15 V min at VCC = 4.5 V); higher propagation delay (58 ns max); same pinout and latch function. | Requires CMOS-level address sources; unsuitable for direct TTL interface without level translation. | Select when system uses 3.3 V or mixed-voltage logic and lower static power (<160 μA ICC) is prioritized over TTL compatibility. |
| SN74LS4514N | Bipolar TTL technology; VIH = 2.0 V, VIL = 0.8 V; slower (tpd = 65 ns typ); through-hole DIP-24 package; no latching. | Lacks input latches-requires externally synchronized address strobes; higher power consumption (~60 mA ICC). | Choose only for legacy board replacements where latch functionality is not required and DIP footprint is mandatory. |
Compared with 74HC4514PW and SN74LS4514N, the 74HCT4514PW118 uniquely combines TTL-level input compatibility, integrated latching, TSSOP24 space efficiency, and industrial temperature support-making it optimal for new designs requiring robust, compact address decoding in mixed-signal control systems.
Availability
74HCT4514PW118 is available at Aetrix Electronics and suitable for memory address decoding, digital signal routing, hexadecimal-to-BCD conversion, and industrial I/O expansion requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for 74HCT4514PW118 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
Nexperia is a global semiconductor expert focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, mobile, and computing markets.
The 74HCT4514 product line delivers TTL-compatible logic functions with latch capability for deterministic address decoding and demultiplexing in resource-constrained embedded systems.
FAQ
What is the function of the LE pin on the 74HCT4514PW118?
The LE (Latch Enable) pin on the 74HCT4514PW118 controls the transparency of the internal address latches. When LE is HIGH, the Q outputs reflect the instantaneous values of A0–A3; when LE transitions LOW, the current address is stored and held, stabilizing the outputs regardless of subsequent address changes. This behavior is explicitly defined in the function table and functional diagram of the 74HCT4514PW118 datasheet.
Can the 74HCT4514PW118 operate at 3.3 V supply voltage?
No, the 74HCT4514PW118 is not specified for 3.3 V operation. Its recommended VCC range is 4.5 V to 5.5 V, and its TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) are guaranteed only within that range. Operating below 4.5 V may result in unreliable input recognition or degraded noise immunity, as confirmed in Table 5 of the 74HCT4514PW118 datasheet.
How does the 74HCT4514PW118 differ from the 74HC4514PW in terms of input compatibility?
The 74HCT4514PW118 features TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), allowing direct interface with 5 V TTL outputs. In contrast, the 74HC4514PW requires CMOS-level inputs (VIH = 3.15 V min at VCC = 4.5 V), making it incompatible with standard TTL without level shifting-per Tables 6 and 10 in the 74HCT4514PW118 datasheet.
What is the maximum propagation delay for the 74HCT4514PW118 at 4.5 V supply?
The maximum propagation delay (tpd) for the 74HCT4514PW118 is 55 ns for An → Qn transitions and 83 ns for E → Qn transitions, both measured at VCC = 4.5 V and −40 °C to +125 °C, as specified in Table 7 of the 74HCT4514PW118 datasheet. These values define worst-case timing margins for synchronous system design.
Does the 74HCT4514PW118 support hot insertion or live swapping?
No, the 74HCT4514PW118 does not support hot insertion. Its absolute maximum ratings specify VCC limits of −0.5 V to +7 V and clamp diode protection only for transient overvoltage-not sustained back-powering or sequential pin engagement. Safe insertion requires power and ground to be established before applying signal voltages, per Section 8 (Limiting Values) of the 74HCT4514PW118 datasheet.
74HCT4514PW118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 4:16
- Independent Circuits:
- 1
- Current - Output High, Low:
- 4mA, 4mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
74HCT4514PW118 FAQ
1.How can I place an order for 74HCT4514PW118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4514PW118 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 74HCT4514PW118 reliable?
The price and inventory of 74HCT4514PW118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4514PW118 is usually 5 days.
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74HCT4514PW118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4514PW118 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 74HCT4514PW118?
For technical support, including 74HCT4514PW118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4514PW118 requirements.
6.How does Aetrix verify that 74HCT4514PW118 is sourced from the original manufacturer or authorized distributors?
All 74HCT4514PW118 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 74HCT4514PW118 meets industry standards.
7.What is the process for return or replacement of 74HCT4514PW118?
All 74HCT4514PW118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4514PW118, 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 74HCT4514PW118 part is unused and in its original packaging.
Return procedure for 74HCT4514PW118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT4514PW118 Tags
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TC7SB3157CFU,LF(CT
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