74FCT162245ATPACT Equivalent & Substitute Parts

Part Overview

The 74FCT162245ATPACT is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 2 elements with 8 bits per element and 3-state output capability. Housed in a 48-TSSOP package, this component operates across a 4.5V to 5.5V supply voltage range with output drive capability of 24mA for both high and low states. The part is classified as obsolete, necessitating identification of active or alternative equivalent components for new designs and ongoing production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	74FCT162245ATPACT
Manufacturer	Texas Instruments
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74FCT162245ATPACT is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic type: Transceiver, Non-Inverting
Number of elements: 2
Number of bits per element: 8
Output type: 3-State
Package / Case: 48-TFSOP (0.240", 6.10mm Width)
Operating temperature range: -40°C ~ 85°C (TA)
Supply voltage range: 4.5V ~ 5.5V
Output current capability: 24mA (high and low)

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalents (Identical Electrical Specifications): Parts that match all critical electrical parameters including supply voltage, output current, and functional characteristics. These include 74FCT162245CTPACT, 74FCT162H245ATPACT, 74FCT162H245CTPACT, and CY74FCT162245TPACT.

Category 2 - Manufacturer Recommended Alternatives: Parts that maintain functional equivalence within the 74FCT logic family but may differ in packaging format or current output specifications. These include 74FCT162245ATPAG, 74FCT162245ATPVG, and 74FCT162245CTPAG from various manufacturers.

Category 3 - Lower Voltage Alternative: The SN74LVCR162245DGGR operates at reduced supply voltage (2.7V ~ 3.6V) with lower output current (12mA) and represents a functional alternative for applications not requiring 5.5V operation.

Parameter Comparison

Part Number	Manufacturer	Series	Supply Voltage	Output Current (High/Low)	Package	Product Status	Inventory (Pcs)
74FCT162245ATPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	3200
SN74LVCR162245DGGR	Texas Instruments	74LVCR	2.7V ~ 3.6V	12mA, 12mA	48-TFSOP	Active	2816
74ACT16245DGGR	Texas Instruments	74ACT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Active	1970
74FCT162245CTPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	873
74FCT162H245ATPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	2548
74FCT162H245CTPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	990
CY74FCT162245TPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	2171
74FCT162245ATPAG	Renesas Electronics Corporation	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	1114
74FCT162245ATPVG	Renesas Electronics Corporation	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-BSSOP	Obsolete	1214
74FCT162245CTPAG	IDT, Integrated Device Technology Inc	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Active	2527
74FCT16245ATPAG	IDT, Integrated Device Technology Inc	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-TFSOP	Active	6679

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select 74ACT16245DGGR from Texas Instruments as the primary active alternative. This part maintains identical electrical specifications (4.5V ~ 5.5V supply, 24mA output current) and package format (48-TFSOP) while offering active product status and established supply chain availability.

For Active Production Designs: 74FCT162245CTPAG (IDT) is available in active status with 2527 units in stock and maintains full parametric equivalence to the original part. This represents the most direct active substitute within the 74FCT series.

For Voltage-Flexible Applications: SN74LVCR162245DGGR provides functional transceiver capability at reduced supply voltage (2.7V ~ 3.6V) with lower output current (12mA). Selection of this part requires confirmation that the application circuit can operate within the reduced voltage and current specifications.

For Higher Output Current Requirements: 74FCT16245ATPAG (IDT) offers increased output current capability (32mA high, 64mA low) while maintaining the 4.5V ~ 5.5V supply voltage range and 48-TFSOP package. This part is suitable only if the higher current drive does not create thermal or power dissipation concerns.

All recommended substitutes maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can 74FCT162245ATPVG be used as a direct replacement for 74FCT162245ATPACT?

A: 74FCT162245ATPVG maintains identical electrical specifications but uses a different package format (48-BSSOP, 0.295" width versus 48-TFSOP, 0.240" width). Physical board layout compatibility must be verified before substitution. The part also carries MSL-3 moisture sensitivity versus MSL-1 for the original.

Q: What is the primary difference between 74FCT162245ATPACT and SN74LVCR162245DGGR?

A: The SN74LVCR162245DGGR operates at a lower supply voltage range (2.7V ~ 3.6V) compared to the original part (4.5V ~ 5.5V). Output current is also reduced to 12mA versus 24mA. This part is suitable only for applications designed for low-voltage operation.

Q: Is 74FCT16245ATPAG a suitable substitute?

A: 74FCT16245ATPAG provides higher output current (32mA high, 64mA low) than the original specification (24mA). While functionally compatible, this part should only be selected if the increased current capability does not introduce thermal or power supply concerns in the target application.

Q: Why are some substitute parts listed as obsolete?

A: Several parametric equivalents within the 74FCT series (74FCT162H245ATPACT, 74FCT162H245CTPACT, CY74FCT162245TPACT) are classified as obsolete. These parts maintain full electrical and mechanical compatibility but have been discontinued by their manufacturers. Active alternatives such as 74ACT16245DGGR or 74FCT162245CTPAG should be prioritized for new designs.

Q: What compliance certifications apply to all substitute parts?

A: All listed substitute parts maintain ROHS3 compliance and are classified under ECCN EAR99 with HTSUS code 8542.39.0001, consistent with the original 74FCT162245ATPACT. REACH status is unaffected for all parts.

Q: Can packaging format differences affect circuit performance?

A: Packaging format differences (48-TFSOP versus 48-BSSOP) do not affect electrical performance but require physical board layout verification. Pin pitch and body dimensions must be confirmed compatible with existing PCB footprints before substitution.

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