SN74ALS639AN Texas Instruments - Yeehing Electronics

Octal Bus Transceivers

Pricing (USD)

Quantity	Unit Price
1 — 99	5.332
100 — 249	4.347
250 — 999	3.417
1,000 +	2.03

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Bus Transceivers
RoHS	Y
Logic Family	ALS
Input Level	TTL
Output Level	TTL
Output Type	3-State
High Level Output Current	- 15 mA
Low Level Output Current	24 mA
Propagation Delay Time	30 ns
Supply Voltage - Max	5.5 V
Supply Voltage - Min	4.5 V
Minimum Operating Temperature	0 C
Maximum Operating Temperature	+ 70 C
Package / Case	PDIP-20
Packaging	Tube
Function	Octal bus transceivers are designed for asynchronous two-way communication
Height	4.57 mm
Length	24.33 mm
Number of Circuits	8
Operating Temperature Range	0 C to + 70 C
Product	Standard Transceiver
Series	SN74ALS639A
Technology	Bipolar
Width	6.35 mm
Brand	Texas Instruments
Mounting Style	Through Hole
Number of Channels	8
Operating Supply Voltage	4.5 V to 5.5 V
Polarity	Non-Inverting
Product Type	Bus Transceivers
Factory Pack Quantity	20
Subcategory	Logic ICs
Unit Weight	0.042297 oz

For more information, please refer to datasheet

Documents

SN74ALS639AN Datasheet

More Information

These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses. The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so the buses are isolated.