Specification	SN74LVC646ADBR

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-SSOP
Supplier Device Package	24-SSOP
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	Cut Tape (CT)	1	$ 1.64
	Digi-Reel®	1	$ 1.64
	Tape & Reel (TR)	2000	$ 0.75
		6000	$ 0.72
		10000	$ 0.69
Texas Instruments	LARGE T&R	1	$ 1.23
		100	$ 1.02
		250	$ 0.73
		1000	$ 0.55

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

SN74LVC646ADBR

Deep-Dive with AI

SN74LVC646ADBR

Deep-Dive with AI

Technical Specifications

SN74LVC646A Series

Pricing

Description

SN74LVC646A Series

Documents

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

LOGIC Pocket Data Book (Rev. B)

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

Texas Instruments Little Logic Application Report

LVC Characterization Information

STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS

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)

Input and Output Characteristics of Digital Integrated Circuits

SN54LVC646A, SN74LVC646A datasheet (Rev. J)

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

Low-Voltage Logic (LVC) Designer's Guide

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

Signal Switch Data Book (Rev. A)

Live Insertion

Use of the CMOS Unbuffered Inverter in Oscillator Circuits

Logic Guide (Rev. AB)

CMOS Power Consumption and CPD Calculation (Rev. B)

Design Summary for WCSP Little Logic (Rev. B)

Standard Linear & Logic for PCs, Servers & Motherboards

How to Select Little Logic (Rev. A)

Understanding Advanced Bus-Interface Products Design Guide

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

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

Little Logic Guide 2018 (Rev. G)

TI IBIS File Creation, Validation, and Distribution Processes

Selecting the Right Level Translation Solution (Rev. A)

SN74LVC646A Series