Integrated Circuits (ICs)

SN74ALS667DW

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Texas Instruments

OCTAL D-TYPE TRANSPARENT READ-BACK LATCHES WITH 3-STATE OUTPUTS

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Integrated Circuits (ICs)

SN74ALS667DW

Active

Texas Instruments

OCTAL D-TYPE TRANSPARENT READ-BACK LATCHES WITH 3-STATE OUTPUTS

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	SN74ALS667DW

Circuit [custom]	8
Circuit [custom]	8
Current - Output High, Low [custom]	400 µA
Current - Output High, Low [custom]	8 mA
Delay Time - Propagation	9 ns
Independent Circuits	1
Logic Type	D-Type Transparent Latch
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Type	Tri-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]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS667 Series

Octal D-Type Transparent Read-Back Latches With 3-State Outputs

Part	Package / Case	Package / Case	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Mounting Type	Supplier Device Package	Independent Circuits	Circuit [custom]	Circuit [custom]	Output Type	Logic Type	Delay Time - Propagation	Package / Case [custom]	Package / Case [custom]
Texas Instruments SN74ALS667NT3
Texas Instruments SN74ALS667NT	0.3 in	24-DIP	7.62 mm	4.5 V	5.5 V	70 °C	0 °C	400 µA	8 mA	Through Hole	24-PDIP	1	8	8	Tri-State	D-Type Transparent Latch	9 ns
Texas Instruments SN74ALS667DWRG4		24-SOIC		4.5 V	5.5 V	70 °C	0 °C	400 µA	8 mA	Surface Mount	24-SOIC	1	8	8	Tri-State	D-Type Transparent Latch	9 ns	7.5 mm	0.295 in
Texas Instruments SN74ALS667DW		24-SOIC		4.5 V	5.5 V	70 °C	0 °C	400 µA	8 mA	Surface Mount	24-SOIC	1	8	8	Tri-State	D-Type Transparent Latch	9 ns	7.5 mm	0.295 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	50	$ 26.97
Texas Instruments	TUBE	1	$ 27.64
		100	$ 24.57
		250	$ 20.20
		1000	$ 18.06

Description

General part information

SN74ALS667 Series

These 8-bit D-type transparent latches are designed specifically for storing the contents of the input data bus, plus reading back the stored data onto the input data bus. In addition, they provide a 3-state buffer-type output and are easily utilized in bus-structured applications.

While the latch enable (LE) is high, the Q outputs of the SN74ALS666 follow the data (D) inputs. The Q\ outputs of the SN74ALS667 provide the inverse of the data applied to its D inputs. The Q or Q\ output of both devices is in the high-impedance state if either output-enable (OE1\ or OE2\) input is at a high logic level.

Read back is provided through the read-back control (OERB\) input. When OERB\ is taken low, the data present at the output of the data latches passes back onto the input data bus. When OERB\ is taken high, the output of the data latches is isolated from the D inputs. OERB\ does not affect the internal operation of the latches; however, caution should be exercised to avoid a bus conflict.

Documents

Technical documentation and resources