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74VHC245MTC Equivalent & Substitute Parts
Part Overview
The 74VHC245MTC is a non-inverting transceiver logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability. This device operates across a supply voltage range of 2V to 5.5V and is housed in a 20-TSSOP surface mount package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 8mA, 8mA |
| Voltage - Supply | 2V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 74VHC245MTC is determined by strict alignment with the following electrical and mechanical parameters:
- Logic Type: Transceiver, Non-Inverting
- Number of Elements: 1
- Number of Bits per Element: 8
- Output Type: 3-State
- Current - Output High, Low: 8mA, 8mA
- Voltage - Supply: 2V ~ 5.5V
- Package / Case: 20-TSSOP
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
All substitute parts listed below meet these core electrical and mechanical specifications. Variations in product status, operating temperature range, and packaging format (Tape & Reel vs. Cut Tape) are noted but do not affect functional equivalence within the specified parameter set.
Parameter Comparison
| Part Number | Manufacturer | Series | Logic Type | Elements / Bits | Output Type | Current (mA) | Supply Voltage | Temp Range (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 74VHC245MTC | onsemi | 74VHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Obsolete |
| MC74VHC245DTR2G | onsemi | 74VHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 85 | 20-TSSOP | Active |
| SN74AHC245PW | Texas Instruments | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Discontinued |
| SN74AHC245PWR | Texas Instruments | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Active |
| SN74AHC245PWRG4 | Texas Instruments | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Discontinued |
| 74AHC245PW,112 | Nexperia USA Inc. | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Obsolete |
| 74AHC245PW,118 | Nexperia USA Inc. | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Active |
| 74AHC245PW-Q100J | Nexperia USA Inc. | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Active |
| 74VHC245PW,118 | Nexperia USA Inc. | 74VHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Active |
| SN74AHC245MPWREP | Texas Instruments | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -55 ~ 125 | 20-TSSOP | Active |
| SN74AHC245QPWR | Texas Instruments | 74AHC | Non-Inverting | 1 / 8 | 3-State | 8, 8 | 2V ~ 5.5V | -40 ~ 125 | 20-TSSOP | Active |
Engineering Selection Recommendations
For applications currently using the obsolete 74VHC245MTC, the following selection criteria apply:
Primary Recommendation - Same Series (74VHC): MC74VHC245DTR2G (onsemi) maintains the original 74VHC series designation and is currently in active production status. This part provides direct functional equivalence with identical electrical specifications and operating temperature range (-40°C to 85°C).
Alternative Series (74AHC) - Extended Temperature Range: Parts from the 74AHC series (SN74AHC245PWR, SN74AHC245QPWR, 74AHC245PW,118, 74AHC245PW-Q100J, SN74AHC245MPWREP) offer extended operating temperature ranges (-40°C to 125°C or -55°C to 125°C) while maintaining all core electrical parameters. These are suitable for applications requiring broader temperature performance. Multiple manufacturers (Texas Instruments, Nexperia USA Inc.) provide 74AHC variants in active production status.
Compliance Considerations: All listed substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.
Packaging Format: Substitutes are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel formats. Selection should align with procurement and assembly requirements.
Frequently Asked Questions (FAQ)
Q: Can I use a 74AHC245 part to replace the 74VHC245MTC? A: Yes. Both 74VHC and 74AHC series meet the core electrical and mechanical substitution parameters: 1 element, 8 bits per element, 3-state output, 8mA output current, 2V to 5.5V supply voltage, and 20-TSSOP package. The 74AHC variants offer extended operating temperature ranges (-40°C to 125°C vs. -40°C to 85°C).
Q: What is the difference between MC74VHC245DTR2G and SN74AHC245PWR? A: Both are functionally equivalent within the specified parameter set. MC74VHC245DTR2G maintains the 74VHC series and is supplied by onsemi. SN74AHC245PWR is from the 74AHC series supplied by Texas Instruments and offers an extended upper operating temperature limit (125°C vs. 85°C). Both are in active production.
Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance? A: No. Packaging format affects only procurement, handling, and assembly logistics. Electrical and mechanical specifications remain identical regardless of packaging format.
Q: Is the 74AHC245PW-Q100J suitable for automotive applications? A: The 74AHC245PW-Q100J carries AEC-Q100 automotive qualification. Selection for automotive use should be based on application-specific requirements and design validation protocols.
Q: Why do some parts show "Discontinued at DiGi Electronics" status? A: Product status reflects availability through specific distributors. Parts marked as discontinued at DiGi Electronics may remain available through other channels or manufacturers. Verify current availability through your supply chain.
Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) rating, consistent with the original 74VHC245MTC specifications.
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