Integrated Circuits (ICs)

SN74LVC646APW

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OCTAL BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTS

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DocumentsSemiconductor Packing Material Electrostatic Discharge (ESD) Protection Standard Linear & Logic for PCs, Servers & Motherboards +25

Integrated Circuits (ICs)

SN74LVC646APW

Active

Texas Instruments

OCTAL BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTS

Deep-Dive with AI

DocumentsSemiconductor Packing Material Electrostatic Discharge (ESD) Protection Standard Linear & Logic for PCs, Servers & Motherboards +25

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SN74LVC646APW

Current - Output High, Low	24 mA
Mounting Type	Surface Mount
Number of Bits per Element	8
Number of Elements	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	3-State
Package / Case	24-TSSOP
Package / Case	0.173 in, 4.4 mm
Supplier Device Package	24-TSSOP
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	1.65 V

SN74LVC646A Series

Octal Bus Transceiver And Register With 3-State Outputs

Part	Number of Elements	Current - Output High, Low	Number of Bits per Element	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case [custom]	Package / Case [custom]	Package / Case [custom]	Package / Case [custom]
Texas Instruments SN74LVC646APW	1	24 mA	8	Surface Mount	24-TSSOP	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm	3-State	1.65 V	3.6 V
Texas Instruments SN74LVC646ANSR	1	24 mA	8	Surface Mount	24-SO	85 °C	-40 °C	24-SOIC		3-State	1.65 V	3.6 V	5.3 mm	0.209 in
Texas Instruments SN74LVC646ADW	1	24 mA	8	Surface Mount	24-SOIC	85 °C	-40 °C	24-SOIC		3-State	1.65 V	3.6 V			7.5 mm	0.295 in
Texas Instruments SN74LVC646APWR	1	24 mA	8	Surface Mount	24-TSSOP	85 °C	-40 °C	24-TSSOP	0.173 in 4.4 mm	3-State	1.65 V	3.6 V
Texas Instruments SN74LVC646ADWR	1	24 mA	8	Surface Mount	24-SOIC	85 °C	-40 °C	24-SOIC		3-State	1.65 V	3.6 V			7.5 mm	0.295 in
Texas Instruments SN74LVC646ADBR	1	24 mA	8	Surface Mount	24-SSOP	85 °C	-40 °C	24-SSOP		3-State	1.65 V	3.6 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.79
		10	$ 1.61
		60	$ 1.51
		120	$ 1.29
		300	$ 1.21
		540	$ 1.06
		1020	$ 0.88
		2520	$ 0.82
		5040	$ 0.79
Texas Instruments	TUBE	1	$ 1.34
		100	$ 1.11
		250	$ 0.80
		1000	$ 0.60

Description

General part information

SN74LVC646A Series

The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V VCCoperation, and the SN74LVC646A octal bus transceiver and register is designed for 1.65-V to 3.6-V VCCoperation.

These devices consist of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that are performed with the ’LVC646A devices.

Output-enable (OE)\ and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at thehigh-impedance port is stored in either register or in both.

Documents

Technical documentation and resources

SN74LVC646APW

Deep-Dive with AI

SN74LVC646APW

Deep-Dive with AI

Technical Specifications

SN74LVC646A Series

Pricing

Description

SN74LVC646A Series

Documents

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

Standard Linear & Logic for PCs, Servers & Motherboards

Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices

Selecting the Right Level Translation Solution (Rev. A)

STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS

Live Insertion

LOGIC Pocket Data Book (Rev. B)

Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A)

SN54LVC646A, SN74LVC646A datasheet (Rev. J)

Implications of Slow or Floating CMOS Inputs (Rev. E)

16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B)

How to Select Little Logic (Rev. A)

LVC Characterization Information

Little Logic Guide 2018 (Rev. G)

LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B)

TI IBIS File Creation, Validation, and Distribution Processes

Low-Voltage Logic (LVC) Designer's Guide

Signal Switch Data Book (Rev. A)

Design Summary for WCSP Little Logic (Rev. B)

Understanding Advanced Bus-Interface Products Design Guide

Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)

CMOS Power Consumption and CPD Calculation (Rev. B)

Use of the CMOS Unbuffered Inverter in Oscillator Circuits

Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices

Logic Guide (Rev. AB)

Input and Output Characteristics of Digital Integrated Circuits

Texas Instruments Little Logic Application Report

SN74LVC646A Series