74FCT16244TPACTG4 Equivalent & Substitute Parts

Part Overview

The 74FCT16244TPACTG4 is a non-inverting buffer IC manufactured by Texas Instruments, featuring 4 elements with 4 bits per element and 3-state output capability. This 48-TSSOP surface mount device operates across a 4.5V to 5.5V supply range and is designed for logic signal buffering applications requiring high current output (32mA high, 64mA low).

The 74FCT16244TPACTG4 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements.

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	32mA / 64mA
Voltage - Supply	4.5V ~ 5.5V
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 74FCT16244TPACTG4 are classified based on strict adherence to the following critical parameters:

Substitution Criteria:

Logic Type: Buffer, Non-Inverting
Number of Elements: 4
Number of Bits per Element: 4
Output Type: 3-State
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Package / Case: 48-TFSOP (0.240", 6.10mm Width) or 48-TSSOP equivalent
Current - Output High / Low: 32mA / 64mA (primary series) or 24mA / 24mA (alternative series)

Grouping Categories:

Group 1: Parametric Equivalents (74FCT Series - Cypress & Texas Instruments) Parts maintaining identical electrical specifications and 48-TSSOP packaging. These include CY74FCT16244ATPACT, CY74FCT16244TPACT, and CY74FCT16244CTPACT.

Group 2: Parametric Equivalents (74ABT Series - Texas Instruments & NXP) Parts with identical logic configuration, output current ratings, and 48-TSSOP packaging but from the 74ABT series. These include SN74ABT16244ADGGR, SN74ABTH16244DGGR, and 74ABT16244ADGG,118.

Group 3: Manufacturer Recommended Alternatives (74FCT162244 Series - IDT) Parts with identical electrical specifications but featuring 48-BSSOP (0.295", 7.50mm Width) packaging and reduced output current (24mA / 24mA). These include 74FCT162244ATPVG, 74FCT162244CTPVG, and 74FCT16244ATPVG.

Group 4: Cross-Series Alternative (74ABT16241 Series - Texas Instruments) Part SN74ABT16241ADGGR maintains core electrical specifications with 48-TSSOP packaging but represents a different base product number within the 74ABT family.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Product Status	Logic Type	Elements / Bits	Output Current (H/L)	Supply Voltage	Package	Inventory (Pcs)
74FCT16244TPACTG4	Texas Instruments	74FCT	Discontinued	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	1135
CY74FCT16244ATPACT	Cypress Semiconductor	74FCT	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	2700
CY74FCT16244TPACT	Texas Instruments	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	2052
CY74FCT16244CTPACT	Texas Instruments	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	798
SN74ABT16244ADGGR	Texas Instruments	74ABT	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	2527
SN74ABTH16244DGGR	Texas Instruments	74ABTH	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	3300
SN74ABT16241ADGGR	Texas Instruments	74ABT	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	2100
74ABT16244ADGG,118	NXP Semiconductors	74ABT	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-TSSOP	19074
74FCT162244ATPVG	IDT	74FCT	Active	Buffer, Non-Inverting	4 / 4	24mA / 24mA	4.5V ~ 5.5V	48-BSSOP	4078
74FCT162244CTPVG	IDT	74FCT	Active	Buffer, Non-Inverting	4 / 4	24mA / 24mA	4.5V ~ 5.5V	48-BSSOP	1661
74FCT16244ATPVG	IDT	74FCT	Active	Buffer, Non-Inverting	4 / 4	32mA / 64mA	4.5V ~ 5.5V	48-BSSOP	2400

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement - 48-TSSOP Package):

For applications requiring identical package geometry and electrical specifications, select from the 74FCT or 74ABT series parts with 48-TSSOP packaging and 32mA/64mA output current ratings. CY74FCT16244ATPACT (Cypress, Active status, 2700 units in stock) provides the closest parametric match with current product availability. SN74ABT16244ADGGR (Texas Instruments, Active status, 2527 units) and SN74ABTH16244DGGR (Texas Instruments, Active status, 3300 units) offer equivalent functionality with established supply chains. The NXP part 74ABT16244ADGG,118 (Active status, 19074 units) provides the highest inventory availability.

Secondary Substitutes (Package Variant - 48-BSSOP):

When PCB layout accommodates the larger 48-BSSOP package (0.295", 7.50mm Width), IDT-manufactured parts 74FCT162244ATPVG and 74FCT16244ATPVG maintain full electrical compatibility with the original specification. These parts are Active status with established production support. Note that 74FCT162244ATPVG and 74FCT162244CTPVG feature reduced output current (24mA/24mA) and are suitable only for applications not requiring the full 32mA/64mA output current specification.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings consistent with the original part. Supply voltage range (4.5V ~ 5.5V) and operating temperature range (-40°C ~ 85°C) are uniform across all substitute options.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ABT16244ADGGR as a direct replacement for 74FCT16244TPACTG4?

A: Yes. Both parts maintain identical logic configuration (Buffer, Non-Inverting, 4 elements, 4 bits per element), 3-state output, output current ratings (32mA/64mA), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and 48-TSSOP packaging. The primary difference is the logic family (74ABT vs. 74FCT), which does not affect functional compatibility in this application.

Q: What is the difference between 48-TSSOP and 48-BSSOP packaging?

A: Both are 48-pin surface mount packages with different physical dimensions. The 48-TSSOP (Thin Shrink Small Outline Package) measures 0.240" (6.10mm) in width, while the 48-BSSOP (Broad Small Outline Package) measures 0.295" (7.50mm) in width. PCB layout and footprint compatibility must be verified before selecting a package variant.

Q: Why do some substitute parts have lower output current ratings (24mA/24mA vs. 32mA/64mA)?

A: The IDT 74FCT162244 series parts feature different output stage design, resulting in symmetric output current ratings (24mA/24mA) compared to the asymmetric ratings (32mA/64mA) of the original 74FCT16244 and 74ABT16244 series. Selection depends on application current requirements. Parts with 24mA/24mA ratings are suitable only for applications not exceeding these current limits.

Q: Is CY74FCT16244ATPACT a better choice than SN74ABT16244ADGGR?

A: Both parts are functionally equivalent with identical electrical specifications and 48-TSSOP packaging. CY74FCT16244ATPACT maintains Active product status with 2700 units in stock. SN74ABT16244ADGGR also maintains Active status with 2527 units in stock. Selection should be based on supplier availability, lead time, and cost considerations rather than technical performance.

Q: Can I substitute a part with Obsolete or Discontinued status?

A: Parts with Obsolete or Discontinued status (CY74FCT16244TPACT, CY74FCT16244CTPACT) may be available from inventory but lack ongoing manufacturing support. These should be considered only when Active alternatives are unavailable and existing inventory is confirmed through supplier verification.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings. REACH Unaffected status applies to parts where specified. ECCN EAR99 and HTSUS 8542.39.0001 classifications are consistent across all options.

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