Specification	SN74LVTH646DW

Current - Output High, Low [custom]	64 mA
Current - Output High, Low [custom]	32 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-SOIC
Package / Case [custom]	7.5 mm
Package / Case [custom]	0.295 in
Supplier Device Package	24-SOIC
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	2.7 V

SN74LVTH646 Series

3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs

Part	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Elements	Supplier Device Package	Number of Bits per Element	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Package / Case	Package / Case	Package / Case [custom]	Package / Case [custom]	Package / Case [y]	Package / Case [y]	Package / Case [custom]	Package / Case [custom]
Texas Instruments SN74LVTH646IPWREP	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-TSSOP	8	85 °C	-40 °C	3-State	24-TSSOP	0.173 in 4.4 mm
Texas Instruments SN74LVTH646DW	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-SOIC	8	85 °C	-40 °C	3-State	24-SOIC		7.5 mm	0.295 in
Texas Instruments SN74LVTH646PW	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-TSSOP	8	85 °C	-40 °C	3-State	24-TSSOP	0.173 in 4.4 mm
Texas Instruments SN74LVTH646PWR	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-TSSOP	8	85 °C	-40 °C	3-State	24-TSSOP	0.173 in 4.4 mm
Texas Instruments SN74LVTH646DGVR	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-TVSOP	8	85 °C	-40 °C	3-State	24-TFSOP				4.4 mm	0.173 in
Texas Instruments SN74LVTH646DWG4	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-SOIC	8	85 °C	-40 °C	3-State	24-SOIC		7.5 mm	0.295 in
Texas Instruments SN74LVTH646NSR	Surface Mount	64 mA	32 mA	2.7 V	3.6 V	1	24-SO	8	85 °C	-40 °C	3-State	24-SOIC						5.3 mm	0.209 in

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	$ 0.99
		10	$ 0.89
		25	$ 0.84
		100	$ 0.69
		250	$ 0.65
		500	$ 0.57
		1000	$ 0.53
Texas Instruments	TUBE	1	$ 1.05
		100	$ 0.81
		250	$ 0.59
		1000	$ 0.42

Description

General part information

SN74LVTH646 Series

These bus transceivers and registers are designed specifically for low-voltage (3.3-V) VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment.

The ’LVTH646 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 can be performed with the ’LVTH646.

Output-enable (OE\) and direction-control (DIR) inputs are provided to control the transceiver functions. In the transceiver mode, data present at the high-impedance port can be stored in either register or in both.