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PI74LCX16244AE Equivalent & Substitute Parts
Part Overview
The PI74LCX16244AE is a non-inverting buffer logic IC manufactured by Diodes Incorporated, designed for 3-state output applications in 48-TSSOP packaging. This component functions as a 4-element, 4-bit buffer with supply voltage range of 2V to 3.6V and operating temperature range of -40°C to 85°C. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 2V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-TFSOP (0.240", 6.10mm Width) |
| Supplier Device Package | 48-TSSOP |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution for the PI74LCX16244AE is determined by strict equivalence across the following critical parameters:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 4
- Number of Bits per Element: 4
- Output Type: 3-State
- Package / Case: 48-TFSOP (0.240", 6.10mm Width)
- Supplier Device Package: 48-TSSOP
- Mounting Type: Surface Mount
Substitute parts are grouped into two categories based on electrical compatibility:
Category A - Full Electrical Equivalents (24mA Output Current): Parts with identical output current specifications (24mA high and low) and matching supply voltage range (2V ~ 3.6V) and operating temperature range (-40°C ~ 85°C).
Category B - Reduced Output Current Variants (12mA Output Current): Parts with lower output current specifications (12mA high and low) but compatible supply voltage and temperature ranges. These parts maintain functional compatibility but with reduced drive capability.
Category C - Extended Temperature Range (12mA Output Current, -40°C ~ 125°C): Parts with reduced output current but extended operating temperature range to 125°C and lower minimum supply voltage (1.2V).
Parameter Comparison
| Part Number | Manufacturer | Series | Output Current (mA) | Supply Voltage | Operating Temp | Package | Product Status | Packaging Type |
|---|---|---|---|---|---|---|---|---|
| PI74LCX16244AE | Diodes Incorporated | 74LCX | 24, 24 | 2V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Obsolete | - |
| 74LCX16244MTD | onsemi | 74LCX | 24, 24 | 2V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Last Time Buy | Tube |
| 74LCX162244MTDX | Fairchild Semiconductor | 74LCX | 12, 12 | 2V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Active | Bulk |
| 74LCX16244MTDX | onsemi | 74LCX | 24, 24 | 2V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Active | Cut Tape (CT) & Digi-Reel® |
| 74LCXH16244MTDX | onsemi | 74LCXH | 24, 24 | 2V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Last Time Buy | Tape & Reel (TR) |
| 74LVC162244ADGG:11 | Nexperia USA Inc. | 74LVC | 12, 12 | 1.2V ~ 3.6V | -40°C ~ 125°C | 48-TFSOP | Active | Tape & Reel (TR) |
| 74LVC162244APAG | IDT, Integrated Device Technology Inc | 74LVC | 12, 12 | 2.7V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Active | - |
| 74LVC162244APAG8 | Renesas Electronics Corporation | 74LVC | 12, 12 | 2.7V ~ 3.6V | -40°C ~ 85°C | 48-TFSOP | Active | - |
| 74LVC162244APVG | Renesas Electronics Corporation | 74LVC | 12, 12 | 2.7V ~ 3.6V | -40°C ~ 85°C | 48-BSSOP | Active | Tube |
| 74LVC162244APVG8 | Renesas Electronics Corporation | 74LVC | 12, 12 | 2.7V ~ 3.6V | -40°C ~ 85°C | 48-BSSOP | Active | Tape & Reel (TR) |
| 74LVC16244ADGG,112 | NXP Semiconductors | 74LVC | 24, 24 | 1.2V ~ 3.6V | -40°C ~ 125°C | 48-TFSOP | Active | Bulk |
Engineering Selection Recommendations
Primary Recommendation - Full Electrical Equivalents:
For direct replacement with identical electrical performance, select 74LCX16244MTD (onsemi) or 74LCX16244MTDX (onsemi). Both maintain 24mA output current and 2V to 3.6V supply voltage specifications. The 74LCX16244MTDX is preferred due to active product status and availability in Cut Tape & Digi-Reel packaging, supporting both prototype and production volumes.
Secondary Recommendation - Active Status with Extended Temperature:
The 74LVC16244ADGG,112 (NXP Semiconductors) provides active product status with extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (1.2V). Output current is reduced to 12mA, suitable for applications not requiring maximum drive capability.
Alternative for Reduced Drive Applications:
The 74LVC162244APAG8 (Renesas Electronics Corporation) and 74LVC162244APAG (IDT) offer 12mA output current with active status. These are appropriate for designs where reduced output current meets system requirements.
Package Consideration:
Parts 74LVC162244APVG and 74LVC162244APVG8 use 48-BSSOP packaging (0.295", 7.50mm Width) instead of 48-TFSOP. These are not pin-compatible and require PCB redesign.
Compliance Status:
All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can I use a 12mA output current part as a direct replacement for the 24mA PI74LCX16244AE?
A: Functional substitution is possible if your circuit design does not require the full 24mA output current. The 12mA variants (74LVC series) maintain identical logic function and 3-state output behavior. System-level load analysis is necessary to confirm adequacy.
Q: What is the difference between 74LCX and 74LVC series parts?
A: The 74LVC series supports lower minimum supply voltage (1.2V vs 2V) and extended operating temperature range (125°C vs 85°C maximum). Output current specifications vary by specific part number. Both series maintain non-inverting buffer logic with 3-state output.
Q: Are 48-TFSOP and 48-BSSOP packages interchangeable?
A: No. 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width) have different physical dimensions and pin spacing. PCB footprint redesign is required for package substitution.
Q: Which substitute part has the longest product lifecycle?
A: Parts with Active product status (74LCX16244MTDX, 74LVC162244ADGG:11, 74LVC162244APAG, 74LVC162244APAG8, 74LVC162244APVG, 74LVC162244APVG8, 74LVC16244ADGG,112) are actively manufactured. The 74LCX16244MTD and 74LCXH16244MTDX are Last Time Buy, indicating limited future availability.
Q: Does supply voltage range affect substitution compatibility?
A: Yes. The PI74LCX16244AE operates from 2V to 3.6V. Substitutes with lower minimum voltage (1.2V) are compatible. Substitutes with higher minimum voltage (2.7V) are compatible only if your design supplies 2.7V or higher.
Q: What is the significance of Moisture Sensitivity Level (MSL) differences?
A: MSL ratings indicate storage and handling requirements. MSL 1 (Unlimited) requires no special moisture control. MSL 2 (1 Year) and MSL 3 (168 Hours) require controlled storage environments and bake-out procedures before soldering. These are manufacturing and assembly considerations, not functional substitution criteria.
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