Request Quote
(Ships tomorrow)
PI74FCT244TQE Equivalent & Substitute Parts
Part Overview
The PI74FCT244TQE is a non-inverting buffer logic IC manufactured by Diodes Incorporated, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates within the 4.75V to 5.25V supply voltage range and is housed in a 20-QSOP package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PI74FCT244TQE |
| Manufacturer | Diodes Incorporated |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 15mA, 64mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.154", 3.90mm Width) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the PI74FCT244TQE is determined by the following critical parameters:
Core Functional Parameters:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 2
- Number of Bits per Element: 4
- Output Type: 3-State
- Voltage - Supply: 4.75V ~ 5.25V
- Operating Temperature: -40°C ~ 85°C (TA)
- Package / Case: 20-SSOP (0.154", 3.90mm Width)
Output Current Specifications:
- Current - Output High: 15mA minimum
- Current - Output Low: 64mA minimum
Substitute parts are classified into two categories:
MFR Recommended Substitutes (Texas Instruments): Parts CY74FCT2244ATQCT, CY74FCT2244CTQCT, CY74FCT2244TQCT, CY74FCT244ATQCT, and CY74FCT244CTQCT maintain identical functional specifications and package dimensions. These parts are active products with enhanced availability and MSL rating of 2 (1 Year).
Parametric Equivalents (IDT): Parts 74FCT244ATQG and 74FCT244CTQG provide functional equivalence with matching output current specifications and package compatibility, though sourced from Integrated Device Technology Inc.
Parameter Comparison
| Parameter | PI74FCT244TQE (Main) | CY74FCT2244ATQCT | CY74FCT2244CTQCT | CY74FCT2244TQCT | CY74FCT244ATQCT | CY74FCT244CTQCT | CY74FCT244TQCT | 74FCT244ATQG | 74FCT244CTQG |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Inc. | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | IDT | IDT |
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting |
| Number of Elements | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Number of Bits per Element | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High, Low | 15mA, 64mA | 15mA, 12mA | 15mA, 12mA | 15mA, 12mA | 32mA, 64mA | 32mA, 64mA | 32mA, 64mA | 15mA, 64mA | 15mA, 64mA |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Not specified | Not specified |
| MSL Rating | 1 (Unlimited) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) | Not specified | Not specified |
Engineering Selection Recommendations
Primary Substitutes (Texas Instruments CY74FCT Series):
For applications requiring exact output current matching (15mA high, 64mA low), select CY74FCT244ATQCT or CY74FCT244CTQCT. These parts maintain the original current specifications while offering active product status and full ROHS3 compliance.
For applications where output current specifications of 32mA high and 64mA low are acceptable, CY74FCT244CTQCT and CY74FCT244TQCT provide equivalent functionality with active availability.
The CY74FCT2244 series variants (CY74FCT2244ATQCT, CY74FCT2244CTQCT, CY74FCT2244TQCT) offer reduced output low current (12mA) and should be selected only when circuit design accommodates lower sink current capability.
Secondary Equivalents (IDT 74FCT244 Series):
Parts 74FCT244ATQG and 74FCT244CTQG provide parametric equivalence with matching output current specifications (15mA, 64mA) and are suitable for applications where IDT sourcing is preferred. These parts maintain active product status and identical functional parameters.
Compliance Considerations:
All Texas Instruments substitutes maintain ROHS3 compliance matching the original part. IDT equivalents do not specify RoHS status in provided documentation. MSL ratings for Texas Instruments substitutes are rated at 2 (1 Year), compared to the original part's MSL 1 (Unlimited) rating.
Frequently Asked Questions (FAQ)
Q: Can CY74FCT2244ATQCT replace PI74FCT244TQE directly?
A: CY74FCT2244ATQCT is functionally equivalent in logic type, element count, bit configuration, and package dimensions. However, output current specifications differ: CY74FCT2244ATQCT provides 15mA high and 12mA low, while PI74FCT244TQE provides 15mA high and 64mA low. Selection depends on circuit sink current requirements.
Q: What is the difference between CY74FCT244 and CY74FCT2244 series?
A: Both series maintain identical logic functionality, element count, and package specifications. The primary difference is output current capability. CY74FCT244 variants provide 32mA or 15mA high current with 64mA low current. CY74FCT2244 variants provide 15mA high current with 12mA low current. Select based on your circuit's output current demands.
Q: Are all substitutes available in the same package?
A: Yes. All listed substitutes use the 20-SSOP package with 0.154" width and 3.90mm dimensions, ensuring mechanical and electrical compatibility with the original PI74FCT244TQE footprint.
Q: What is the significance of MSL rating differences?
A: The original PI74FCT244TQE carries MSL 1 (Unlimited), indicating no moisture sensitivity constraints. Texas Instruments substitutes carry MSL 2 (1 Year), requiring storage and handling within specified moisture conditions. Verify your supply chain and storage capabilities before selection.
Q: Which substitute offers the best availability?
A: Texas Instruments CY74FCT244CTQCT and CY74FCT244TQCT variants show the highest inventory levels (4089 and 1842 units respectively) among active products, providing superior procurement reliability compared to the obsolete original part.
Q: Can I use 74FCT244ATQG or 74FCT244CTQG from IDT?
A: Yes. IDT 74FCT244ATQG and 74FCT244CTQG provide parametric equivalence with matching output current specifications (15mA high, 64mA low) and identical package dimensions. These parts are suitable alternatives when IDT sourcing is preferred or when Texas Instruments parts are unavailable.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts