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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi MC10H188P

Name: MC10H188P
Brand: onsemi
SKU: MC10H188P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC10H188P

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: MC10H188P.pdf

Description:: IC BUF NON-INVERT -5.46V 16DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MC10H188P from ON Semiconductor is a high-speed MECL 10H™ hex buffer with common enable, designed for ECL logic level translation and fanout expansion in telecom clock distribution and high-speed data path routing. It delivers 1.3 ns typical propagation delay (data-to-output), −1.95 V to −1.60 V low output voltage range, and operates across 0°C to +75°C with −5.2 V ±5% VEE supply.

For engineers reviewing the MC10H188P datasheet, pinout, applications, or equivalent options, this device is selected for sub-2 ns timing-critical bus buffering, differential signal conditioning in test equipment, and legacy MECL 10K system upgrades requiring pin-compatible performance gain without layout change.

Technical Context

The MC10H188P implements six independent non-inverting buffers sharing a single active-low enable input: when EN = LOW, outputs follow inputs; when EN = HIGH, all outputs force LOW. Its MECL 10H architecture uses emitter-coupled transistors biased at −5.2 V VEE, with internal voltage compensation ensuring stable noise margin (150 mV) over temperature and voltage variation.

All six channels are electrically identical, with matched propagation delays (0.7–2.2 ns), rise/fall times (0.7–2.4 ns), and termination requirements: outputs must be terminated to −2.0 V via 50 Ω resistors for specified AC performance. The device is not compatible with TTL or CMOS logic families without level-shifting circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay (tpd)	0.7–2.2 ns (enable/data paths); enables sub-2 ns synchronous bus gating in high-speed test instrumentation
Output Voltage (VOL / VOH)	−1.95 V to −1.60 V (LOW), −1.02 V to −0.84 V (HIGH); meets MECL 10H swing definition for inter-stage compatibility
Input Voltage Thresholds (VIH / VIL)	−1.17 V to −0.735 V (HIGH), −1.95 V to −1.45 V (LOW); provides 150 mV noise margin across full operating range
Power Dissipation	180 mW typical per package (no load); fixed current draw (~42–46 mA) simplifies thermal design in dense backplanes
Supply Voltage (VEE)	−5.2 V ±5%; requires regulated negative rail-no VCC connection needed (VCC1/VCC2 pins unused in standard operation)
Operating Temperature	0°C to +75°C; validated for industrial-grade telecom line card and ATE environments, not extended temp

Pinout & Package

MC10H188P is supplied in a 16-pin plastic dual-in-line package (PDIP), case 648, with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is VCC1 (unused), Pin 16 is VCC2 (unused), Pin 8 is VEE (−5.2 V), and Pin 9 is COMMON (ground reference for enable logic).

Pin/Terminal	Circuit Role	Design Meaning
1 (VCC1)	Unused power pin	No connection required; left open or tied to VEE per layout best practice for noise control
2–7 (AIN–FIN)	Buffer input terminals	Differential pair inputs accepting MECL 10H logic levels; require proper termination to −2.0 V
8 (VEE)	Negative supply rail	Main −5.2 V bias node; must be decoupled locally with low-ESR capacitor near pin
9 (COMMON)	Enable reference node	Ground reference for active-low enable signal; connects to system ground plane
10–15 (AOUT–FOUT)	Buffer output terminals	Emitter-follower outputs driving 50 Ω to −2.0 V; match input thresholds for cascaded stages
16 (VCC2)	Unused power pin	No connection required; same as Pin 1-no internal connection to circuitry

Key Features

Feature	Design Value
MECL 10K pinout and functional compatibility	Direct drop-in replacement for MC10K188 in existing layouts-no PCB revision needed
100% propagation delay improvement vs. 10K	Reduces worst-case path delay by >1 ns, enabling higher clock rates in serial data recovery circuits
Voltage-compensated internal biasing	Maintains consistent switching thresholds and noise margin across −5.2 V ±5% supply variation
150 mV guaranteed noise margin	Ensures reliable operation under simultaneous switching noise in multi-channel ECL backplanes
Pb-free PDIP option (MC10H188PG)	RoHS-compliant variant available with identical electrical specs and thermal profile

Applications

Telecom Line Card Clock Buffering	ATE High-Speed Pattern Generator
Use Scenario: Distributing synchronized 100+ MHz clock signals across multiple ASICs on a dense line card while maintaining skew & jitter integrity. IC Role / Device Role / Timing Role: Fanout buffer providing six matched, low-skew copies of a master ECL clock with sub-2 ns delay consistency. Use Value: Eliminates need for discrete emitter followers; preserves MECL 10H logic levels and drive strength across all six outputs.	Use Scenario: Driving parallel stimulus channels in automated test equipment where deterministic timing alignment between 6 signal paths is critical. IC Role / Device Role / Timing Role: Synchronized enable-controlled buffer staging digital pattern vectors to DUT interface pins. Use Value: Common enable allows simultaneous assertion/clearing of all six outputs with <2.2 ns max skew, meeting ATE timing closure.
High-Speed Data Acquisition Front-End	Legacy System MECL 10K Upgrade
Use Scenario: Conditioning LVDS-to-MECL translated analog-to-digital converter outputs before feeding into FPGA-based correlators. IC Role / Device Role / Timing Role: Level translator and signal conditioner converting external logic levels to robust MECL 10H for internal processing. Use Value: Input voltage thresholds and output swing match ADC driver specs, reducing intersymbol interference in 500+ Mbps streams.	Use Scenario: Replacing aging MC10K188 parts in deployed telecom switches to extend service life without hardware redesign. IC Role / Device Role / Timing Role: Pin- and function-identical upgrade delivering faster propagation and improved noise immunity. Use Value: Enables marginal timing paths to meet spec without changing board layout, firmware, or test procedures.

Telecom Line Card Clock Buffering

ATE High-Speed Pattern Generator

Use Scenario: Distributing synchronized 100+ MHz clock signals across multiple ASICs on a dense line card while maintaining skew & jitter integrity.

IC Role / Device Role / Timing Role: Fanout buffer providing six matched, low-skew copies of a master ECL clock with sub-2 ns delay consistency.

Use Value: Eliminates need for discrete emitter followers; preserves MECL 10H logic levels and drive strength across all six outputs.

Use Scenario: Driving parallel stimulus channels in automated test equipment where deterministic timing alignment between 6 signal paths is critical.

IC Role / Device Role / Timing Role: Synchronized enable-controlled buffer staging digital pattern vectors to DUT interface pins.

Use Value: Common enable allows simultaneous assertion/clearing of all six outputs with <2.2 ns max skew, meeting ATE timing closure.

High-Speed Data Acquisition Front-End

Legacy System MECL 10K Upgrade

Use Scenario: Conditioning LVDS-to-MECL translated analog-to-digital converter outputs before feeding into FPGA-based correlators.

IC Role / Device Role / Timing Role: Level translator and signal conditioner converting external logic levels to robust MECL 10H for internal processing.

Use Value: Input voltage thresholds and output swing match ADC driver specs, reducing intersymbol interference in 500+ Mbps streams.

Use Scenario: Replacing aging MC10K188 parts in deployed telecom switches to extend service life without hardware redesign.

IC Role / Device Role / Timing Role: Pin- and function-identical upgrade delivering faster propagation and improved noise immunity.

Use Value: Enables marginal timing paths to meet spec without changing board layout, firmware, or test procedures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC10K188L	Slower propagation (2.5 ns typ), higher power (220 mW), ceramic DIP only; no Pb-free option	Valid only in legacy systems with existing ceramic socket infrastructure and relaxed timing budgets	Select only if MC10H188P's −5.2 V supply requirement conflicts with system rail availability
SN65EL188D	Same pinout, 1.1 ns tpd, supports −3.3 V to −5.5 V VEE; includes internal termination resistors	Suitable for new designs targeting lower supply voltage or reduced external component count	Prefer when designing for mixed-voltage ECL systems or minimizing BOM count with integrated 50 Ω termination

Compared with MC10K188L and SN65EL188D, the MC10H188P offers optimal balance of proven reliability, direct drop-in replacement capability for 10K systems, and industry-standard PDIP packaging-making it the preferred choice for industrial repair, obsolescence mitigation, and cost-sensitive upgrades.

Availability

MC10H188P is available at Aetrix Electronics and suitable for telecom infrastructure, automated test equipment, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant alternatives.

Supply support for MC10H188P 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

ON Semiconductor is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and communications markets.

The MC10H188P belongs to ON Semiconductor's legacy MECL 10H logic family, engineered specifically for high-speed, low-jitter signal routing in telecom switching, test instrumentation, and military/aerospace subsystems.

FAQ

What is the supply voltage requirement for MC10H188P?

The MC10H188P requires a single −5.2 V ±5% VEE supply referenced to system ground. Pins VCC1 (1) and VCC2 (16) are unconnected and must remain floating or tied to VEE per layout guidelines. No positive supply is used. This negative-rail configuration is fundamental to MECL 10H operation and defines its logic thresholds and output swing.

Is MC10H188P pin-compatible with MC10K188?

Yes, MC10H188P is fully pin-compatible and functionally identical to MC10K188, including identical pin assignments, truth table behavior, and DC/AC specifications-except for improved propagation delay and noise margin. It is explicitly designed as a drop-in upgrade, requiring no PCB changes when replacing MC10K188 in existing designs.

How should MC10H188P outputs be terminated for specified AC performance?

For guaranteed AC parameters-including 0.7–2.2 ns propagation delay and 0.7–2.4 ns rise/fall times-the MC10H188P outputs must be terminated to −2.0 V using 50 Ω resistors. This termination establishes the correct load condition defined in the datasheet test setup and ensures compliance with MECL 10H voltage swing and timing specifications.

Does MC10H188P support operation at temperatures below 0°C?

No, MC10H188P is characterized and guaranteed only for 0°C to +75°C ambient operation. The datasheet specifies no performance data below 0°C, and maximum ratings do not validate sub-zero functionality. For extended temperature applications, consider SN65EL188D or consult ON Semiconductor's qualified MIL-STD or space-grade variants.

What is the role of the COMMON pin (Pin 9) on MC10H188P?

The COMMON pin (Pin 9) serves as the reference ground node for the active-low enable input. It must be connected directly to the system ground plane-not to VEE-to ensure correct enable logic threshold referencing. This separation prevents enable signal corruption due to VEE rail noise and maintains the specified 150 mV noise margin during simultaneous switching events.

MC10H188P Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 10H

Package/Case:: 16-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 6

Input Type:: -

Output Type:: Push-Pull

Current - Output High, Low:: -

Voltage - Supply:: -4.94V ~ -5.46V

Operating Temperature:: 0°C ~ 75°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-PDIP

MC10H188P FAQ

1.How can I place an order for MC10H188P through Aetrix?

Please submit a Request for Quotation (RFQ) for MC10H188P 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 MC10H188P reliable?

The price and inventory of MC10H188P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC10H188P is usually 5 days.

3.What payment methods are accepted for MC10H188P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC10H188P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC10H188P?

MC10H188P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC10H188P 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 MC10H188P?

For technical support, including MC10H188P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC10H188P requirements.

6.How does Aetrix verify that MC10H188P is sourced from the original manufacturer or authorized distributors?

All MC10H188P 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 MC10H188P meets industry standards.

7.What is the process for return or replacement of MC10H188P?

All MC10H188P units undergo pre-shipment inspection (PSI). If there is an issue with MC10H188P, 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 MC10H188P part is unused and in its original packaging.

Return procedure for MC10H188P:

1.Submit a request within 90 days.

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

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