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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

STMicroelectronics HCF4556M013TR

Name: HCF4556M013TR
Brand: STMicroelectronics
SKU: HCF4556M013TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HCF4556M013TR

Manufacturer:: STMicroelectronics

Category:: Signal Switches, Multiplexers, Decoders

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: HCF4556M013TR.pdf

Description:: IC DECODER/DEMUX 1 X 2:4 16SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

HCF4556M013TR from STMicroelectronics is a dual 1-of-4 decoder/demultiplexer in SO-16 package, operating from 3 V to 20 V supply, with low-level active outputs, 100 nA max input leakage at 18 V, and propagation delay as low as 65 ns (VDD = 15 V). It serves in address decoding and signal routing for industrial control logic and legacy microprocessor peripheral interfaces.

For engineers reviewing the HCF4556M013TR datasheet, HCF4556M013TR pinout, HCF4556M013TR application, or HCF4556M013TR equivalent, key selection factors include output polarity (active-low), enable-controlled channel isolation, wide VDD range tolerance, symmetrical output drive capability, and JEDEC B-series CMOS compatibility for drop-in replacement in legacy 4000B-family designs.

Technical Context

The HCF4556M013TR implements two independent binary-to-1-of-4 decoders, each with two select inputs (A, B), one active-high enable (E), and four mutually exclusive active-low outputs (Q0–Q3). Enable dominance ensures all outputs go high when E = HIGH, overriding select states.

It uses standard B-series CMOS process with symmetrical output characteristics, specified quiescent current up to 20 V, and supports 5 V / 10 V / 15 V parametric ratings. Input leakage is guaranteed ≤100 nA at VDD = 18 V and TA = 25°C, meeting JEDEC JESD13B compliance.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 20 V - supports wide-rail industrial and legacy logic systems without level-shifting
Output Logic Polarity	Active-low - Q0–Q3 drive low only on valid decode; enables direct LED sinking or N-channel gate driving
Propagation Delay (A/B → Q)	70 ns (typ) at VDD = 15 V - determines maximum decode clock rate in synchronous address selection
Input Leakage Current	≤100 nA at VDD = 18 V - ensures reliable operation in high-impedance bus-hold or battery-backed circuits
Output Drive (IOL)	2.4 mA sink at VDD = 15 V - sufficient to directly drive TTL loads or small relays without buffering
Enable Propagation Delay	65 ns (typ) at VDD = 15 V - critical for synchronized channel gating in time-multiplexed data paths

Pinout & Package

SO-16 (Small Outline, 150 mil width), compliant with mechanical data PO13H: D = 9.8–10.0 mm, E = 5.8–6.2 mm, e = 1.27 mm pitch, L = 0.5–1.27 mm lead length.

Pin/Terminal	Circuit Role	Design Meaning
1, 15	E (Enable)	Active-high global enable per decoder section; forces all four outputs high when asserted
2, 3, 13, 14	A, B (Select Inputs)	Binary address inputs per decoder; A = LSB, B = MSB for 2-bit decode
4–7, 9–12	Q0–Q3 (Outputs)	Active-low decoded outputs; only one low per enabled decoder, others high
8	VSS	Negative supply reference (GND); must be connected for proper CMOS biasing
16	VDD	Positive supply rail; supports up to 20 V DC with full parametric performance

Key Features

Feature	Design Value
Dual independent decoders	Two fully isolated 1-of-4 sections share only VDD/VSS rails - enables parallel address decoding without inter-stage coupling
Standardized symmetrical outputs	Matched VOL/VOL and IOH/IOL across all outputs - ensures consistent timing and fanout in multi-output routing
Quiescent current tested to 20 V	Max 3000 µA at VDD = 20 V - verified low-power behavior beyond nominal 15 V rating for overvoltage margin
JEDEC JESD13B compliance	Fully conforms to B-series CMOS device definition - guarantees interoperability with 4000B, 74HC, and other legacy CMOS families

Applications

Industrial PLC I/O Expansion

Legacy Microprocessor Address Decoding

Use Scenario: Expanding discrete I/O points in programmable logic controllers using parallel bus architecture.

IC Role / Device Role / Timing Role: Dual decoder routes CPU address lines to select among 8 peripheral chips (4 per section).

Use Value: Active-low outputs directly interface with 74LS-series chip selects; wide VDD range accommodates 5 V/12 V mixed-supply backplanes.

Use Scenario: Selecting memory-mapped peripherals (UART, timer, GPIO) in 8-bit embedded systems like Z80 or 6502 designs.

IC Role / Device Role / Timing Role: Address decoder translates upper address bits into individual chip-enable signals.

Use Value: 65 ns enable delay ensures synchronous peripheral activation within CPU wait-state windows; JEDEC B-series compatibility guarantees pin-for-pin fit with original 4556B designs.

Test Equipment Signal Routing

Automated Meter Reading (AMR) Interface Logic

Use Scenario: Multiplexing sensor excitation signals or measurement return paths in benchtop calibration instruments.

IC Role / Device Role / Timing Role: Demultiplexer directs test stimulus to one of four transducer channels under microcontroller control.

Use Value: Low input leakage (<100 nA) prevents signal corruption in high-impedance sensor bridges; symmetrical outputs minimize channel-to-channel skew.

Use Scenario: Managing communication channel selection between RF module, optical port, and PLC modem in utility smart meters.

IC Role / Device Role / Timing Role: Decoder enables one physical interface at a time based on firmware command.

Use Value: 20 V absolute max rating allows direct connection to meter's 12 V auxiliary rail; 100% quiescent current testing ensures reliability in unregulated power domains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 1-of-4 decoder applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CD4556BE	DIP-16 only; identical electrical specs but lacks SO-16 packaging option	Not suitable for surface-mount production; requires through-hole assembly	Select when legacy DIP footprint or socket-based prototyping is required
74HC154	Single 1-of-16 decoder; active-low outputs; 2 V–6 V supply only; faster (23 ns @ 5 V)	Higher integration but incompatible pinout and decode width; no enable-per-section	Choose for higher-density decoding where board space is constrained and supply is strictly 5 V

Compared with CD4556BE and 74HC154, the HCF4556M013TR uniquely offers SO-16 packaging with full 3–20 V operation and dual independent enables-making it the only choice for modern SMT deployment in mixed-voltage industrial systems requiring legacy 4556 functionality.

Availability

HCF4556M013TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy microprocessor address decoding, and automated meter reading interface logic requiring stable component supply across extended temperature and voltage ranges.

Supply support for HCF4556M013TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The HCF4556M013TR belongs to ST's legacy CMOS logic portfolio, engineered specifically for backward compatibility with 4000B-series devices while delivering enhanced parametric stability and JEDEC-compliant reliability for long-lifecycle industrial control systems.

FAQ

Is HCF4556M013TR pin-compatible with CD4556BE?

Yes - both share identical pin functions and numbering in their respective packages (SO-16 for HCF4556M013TR, DIP-16 for CD4556BE), with matching VDD, VSS, dual A/B/E/Qx assignments. Electrical behavior, including active-low outputs and enable priority, is functionally identical per JEDEC JESD13B specification.

What is the maximum recommended operating voltage for continuous use?

The recommended operating voltage is 3 V to 20 V DC. While absolute maximum rating is 22 V, ST specifies full parametric performance-including propagation delay, output drive, and quiescent current-only up to 20 V, and all 100% production testing occurs at VDD = 20 V.

Can HCF4556M013TR drive LEDs directly?

Yes - with IOL = 2.4 mA at VDD = 15 V and VOL ≤ 0.05 V, it can sink sufficient current for low-power indicator LEDs (e.g., 5 mA red LED with 330 Ω series resistor at 15 V). Ensure total package power dissipation remains below 200 mW under simultaneous output loading.

Does this device support 3.3 V logic systems?

No - minimum recommended VDD is 3 V, but DC specifications (VIH/VIL, noise margin, output drive) are not characterized below 5 V. At 3.3 V, VIH = 2.3 V min and VOL may exceed 0.4 V, risking unreliable TTL or CMOS interfacing; use only in 5 V+ systems per datasheet operating conditions.

HCF4556M013TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 4000B

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Decoder/Demultiplexer

Circuit:: 1 x 2:4

Independent Circuits:: 2

Current - Output High, Low:: 6.8mA, 6.8mA

Voltage Supply Source:: Dual Supply

Voltage - Supply:: 3V ~ 20V

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SO

HCF4556M013TR FAQ

1.How can I place an order for HCF4556M013TR through Aetrix?

Please submit a Request for Quotation (RFQ) for HCF4556M013TR 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 HCF4556M013TR reliable?

The price and inventory of HCF4556M013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HCF4556M013TR is usually 5 days.

3.What payment methods are accepted for HCF4556M013TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HCF4556M013TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HCF4556M013TR?

HCF4556M013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HCF4556M013TR 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 HCF4556M013TR?

For technical support, including HCF4556M013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HCF4556M013TR requirements.

6.How does Aetrix verify that HCF4556M013TR is sourced from the original manufacturer or authorized distributors?

All HCF4556M013TR 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 HCF4556M013TR meets industry standards.

7.What is the process for return or replacement of HCF4556M013TR?

All HCF4556M013TR units undergo pre-shipment inspection (PSI). If there is an issue with HCF4556M013TR, 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 HCF4556M013TR part is unused and in its original packaging.

Return procedure for HCF4556M013TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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