Specification	SN74LVC646APWR

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	Cut Tape (CT)	1	$ 1.49
		10	$ 1.34
		25	$ 1.26
		100	$ 1.08
		250	$ 1.01
		500	$ 0.88
		1000	$ 0.73
	Digi-Reel®	1	$ 1.49
		10	$ 1.34
		25	$ 1.26
		100	$ 1.08
		250	$ 1.01
		500	$ 0.88
		1000	$ 0.73
	Tape & Reel (TR)	2000	$ 0.68
		6000	$ 0.66
		10000	$ 0.63
LCSC	Piece	1	$ 1.91
		200	$ 0.74
		500	$ 0.71
		1000	$ 0.70
Texas Instruments	LARGE T&R	1	$ 1.12
		100	$ 0.93
		250	$ 0.67
		1000	$ 0.50

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

SN74LVC646APWR

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SN74LVC646APWR

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Technical Specifications

SN74LVC646A Series

Pricing

Description

SN74LVC646A Series

Documents

Low-Voltage Logic (LVC) Designer's Guide

Live Insertion

LVC Characterization Information

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

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

STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS

Selecting the Right Level Translation Solution (Rev. A)

LOGIC Pocket Data Book (Rev. B)

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

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

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

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

Understanding Advanced Bus-Interface Products Design Guide

Standard Linear & Logic for PCs, Servers & Motherboards

TI IBIS File Creation, Validation, and Distribution Processes

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

How to Select Little Logic (Rev. A)

CMOS Power Consumption and CPD Calculation (Rev. B)

Logic Guide (Rev. AB)

Texas Instruments Little Logic Application Report

Signal Switch Data Book (Rev. A)

Design Summary for WCSP Little Logic (Rev. B)

Input and Output Characteristics of Digital Integrated Circuits

Little Logic Guide 2018 (Rev. G)

Use of the CMOS Unbuffered Inverter in Oscillator Circuits

SN54LVC646A, SN74LVC646A datasheet (Rev. J)

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

SN74LVC646A Series