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MAX973CSA+
Electronics Part Number
MAX973CSA+-WXManufacturer
onsemi
MAX973CSA+
Description
Dual Comparator IC with Built-In Voltage Reference, 8-SOICInventory
640 Pcs New Original In Stock
8-SOIC comparator with voltage reference and open-drain output; low quiescent current, fast response for overvoltage/undervoltage protection in battery systems.
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Technical Specifications
Category
Logic, Gates and Inverters - Multi-Function, Configurable
Manufacturer
onsemi
Packaging
-
Operating Temperature
-55°C ~ 125°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Series
4000B
Base Product Number
MC14572
Product Status
Obsolete
Output Type
Single-Ended
Voltage - Supply
3V ~ 18V
Supplier Device Package
16-PDIP
Number of Circuits
6
Current - Output High, Low
3.5mA, 8.8mA
Logic Type
NAND/NOR Inverter Gate
Number of Inputs
8 Input (1, 1, 2, 2, 1, 1)
Schmitt Trigger Input
No
Data Sheet Document (D)
Datasheets
Download MC14572UBCPG Product Specification (PDF)
HTML Datasheet
MC14572UBCPG-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MC14572UBCPG-DG MC14572UBCPGOS
Standard Package
500
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Frequently Asked Questions (FAQ)
Can the MC14572UBCPG be safely replaced with a CD4572UBE in a 5V industrial control system without r
Yes, the CD4572UBE is a direct functional and pin-compatible substitute for the MC14572UBCPG in 5V applications, as both are part of the 4000B CMOS logic family with identical pinouts, supply voltage ranges (3V–18V), and DIP-16 packaging. However, verify that your system’s noise margins and propagation delay tolerances align—while typical specs are similar, the CD4572UBE may exhibit slightly different timing under low-voltage conditions. Since the MC14572UBCPG is obsolete, migrating to the CD4572UBE is a recommended long-term strategy, but always validate performance under worst-case load and temperature conditions in your actual circuit.
What are the key reliability risks when using the MC14572UBCPG in an automotive under-hood applicati
Although the MC14572UBCPG is rated for operation up to 125°C, prolonged exposure near this limit—especially in high-vibration automotive environments—can accelerate electromigration and oxide degradation in CMOS structures, leading to parametric drift or premature failure. Additionally, the lack of Schmitt-trigger inputs makes the device susceptible to oscillation or false triggering from slow-rising signals in noisy under-hood wiring. To mitigate risk, derate the supply voltage below 15V at high temperatures, ensure clean signal conditioning with RC filters or external hysteresis, and consider conformal coating to protect against moisture and contaminants.
How does the MC14572UBCPG’s output drive capability (3.5mA high / 8.8mA low) impact its use in drivi
The MC14572UBCPG’s asymmetric output current—particularly the modest 3.5mA high-state drive—limits its ability to maintain signal integrity over long traces or when driving multiple TTL inputs, which typically require higher sourcing current. This can result in slow rise times, reduced noise margin, and potential logic errors. For such applications, buffer the outputs with a dedicated line driver (e.g., 74HC244) or avoid daisy-chaining more than two TTL loads. If redesign isn’t feasible, increase the pull-up resistor value on the output to improve rise time, but verify timing margins across the full operating temperature range.
Is it safe to mix the MC14572UBCPG with 74HC series logic on the same 5V bus, and what level-shiftin
Yes, the MC14572UBCPG can interface with 74HC logic at 5V since both operate within compatible voltage thresholds (V_IH ≥ 3.5V, V_IL ≤ 1.5V), but caution is required due to differing input leakage and transition characteristics. The MC14572UBCPG lacks Schmitt-trigger inputs, so slow edges from 74HC outputs may cause glitches. To ensure robust operation, add small series resistors (100–470Ω) at the MC14572UBCPG inputs to dampen reflections, and avoid floating inputs by using pull-ups or pull-downs. Also, note that 74HC has faster switching; ensure setup/hold times in sequential circuits are validated to prevent race conditions.
Given that the MC14572UBCPG is obsolete, what long-term supply chain and design continuity strategie
With the MC14572UBCPG marked obsolete, immediate risk mitigation includes securing last-time buys from authorized distributors like onsemi or certified resellers, while qualifying the recommended substitute CD4572UBE through full environmental and functional testing. For new designs, migrate to modern alternatives with Schmitt-trigger inputs (e.g., 74LVC1G00 for single gates) or programmable logic to improve noise immunity and reduce part count. Document all substitutions in your BOM with cross-reference validation reports, and implement a lifecycle monitoring process to avoid future obsolescence surprises—especially critical in medical, industrial, or defense applications with long service lives.
Can the MC14572UBCPG be safely replaced with a CD4572UBE in a 5V industrial control system without r
Yes, the CD4572UBE is a direct functional and pin-compatible substitute for the MC14572UBCPG in 5V applications, as both are part of the 4000B CMOS logic family with identical pinouts, supply voltage ranges (3V–18V), and DIP-16 packaging. However, verify that your system’s noise margins and propagation delay tolerances align—while typical specs are similar, the CD4572UBE may exhibit slightly different timing under low-voltage conditions. Since the MC14572UBCPG is obsolete, migrating to the CD4572UBE is a recommended long-term strategy, but always validate performance under worst-case load and temperature conditions in your actual circuit.
What are the key reliability risks when using the MC14572UBCPG in an automotive under-hood applicati
Although the MC14572UBCPG is rated for operation up to 125°C, prolonged exposure near this limit—especially in high-vibration automotive environments—can accelerate electromigration and oxide degradation in CMOS structures, leading to parametric drift or premature failure. Additionally, the lack of Schmitt-trigger inputs makes the device susceptible to oscillation or false triggering from slow-rising signals in noisy under-hood wiring. To mitigate risk, derate the supply voltage below 15V at high temperatures, ensure clean signal conditioning with RC filters or external hysteresis, and consider conformal coating to protect against moisture and contaminants.
How does the MC14572UBCPG’s output drive capability (3.5mA high / 8.8mA low) impact its use in drivi
The MC14572UBCPG’s asymmetric output current—particularly the modest 3.5mA high-state drive—limits its ability to maintain signal integrity over long traces or when driving multiple TTL inputs, which typically require higher sourcing current. This can result in slow rise times, reduced noise margin, and potential logic errors. For such applications, buffer the outputs with a dedicated line driver (e.g., 74HC244) or avoid daisy-chaining more than two TTL loads. If redesign isn’t feasible, increase the pull-up resistor value on the output to improve rise time, but verify timing margins across the full operating temperature range.
Is it safe to mix the MC14572UBCPG with 74HC series logic on the same 5V bus, and what level-shiftin
Yes, the MC14572UBCPG can interface with 74HC logic at 5V since both operate within compatible voltage thresholds (V_IH ≥ 3.5V, V_IL ≤ 1.5V), but caution is required due to differing input leakage and transition characteristics. The MC14572UBCPG lacks Schmitt-trigger inputs, so slow edges from 74HC outputs may cause glitches. To ensure robust operation, add small series resistors (100–470Ω) at the MC14572UBCPG inputs to dampen reflections, and avoid floating inputs by using pull-ups or pull-downs. Also, note that 74HC has faster switching; ensure setup/hold times in sequential circuits are validated to prevent race conditions.
Given that the MC14572UBCPG is obsolete, what long-term supply chain and design continuity strategie
With the MC14572UBCPG marked obsolete, immediate risk mitigation includes securing last-time buys from authorized distributors like onsemi or certified resellers, while qualifying the recommended substitute CD4572UBE through full environmental and functional testing. For new designs, migrate to modern alternatives with Schmitt-trigger inputs (e.g., 74LVC1G00 for single gates) or programmable logic to improve noise immunity and reduce part count. Document all substitutions in your BOM with cross-reference validation reports, and implement a lifecycle monitoring process to avoid future obsolescence surprises—especially critical in medical, industrial, or defense applications with long service lives.
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Sep 15 2026
