SN74ALS620ADW

Logic Family : ALS
Number of Channels per Chip : 8
Output Type : 3-State
Maximum Operating Temperature : + 70 C
Packaging : Tube
Supply Voltage - Max : 5.5 V
Logic Type : Standard Transceiver
Low Level Output Current : 24 mA
Propagation Delay Time : 10 ns
Supply Voltage - Min : 4.5 V
Input Level : TTL
Output Level : TTL
High Level Output Current : - 15 mA
Package / Case : SOIC-20


Features:

• Local Bus-Latch Capability
• Choice of True or Inverting Logic
• Package Options Include Plastic
  Small-Outline (DW) Packages and Standard
  Plastic (N) 300-mil DIP


Pinout




Specifications

Supply voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, V_I: All inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, TA: SN74ALS620A, SN74ALS623A . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.


Description

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The
control-function implementation allows for maximum flexibility in timing.
These SN74ALS620A, SN74ALS621A, SN74ALS623A, and SN74AS623  devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEAB and OEBA) inputs.
The output-enable inputs disable the device so that the buses are effectively isolated. The dual-enable

configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA. Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA are enabled and all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical for the SN74ALS620A, SN74ALS621A, SN74ALS623A, and SN74AS623 or complementary for the SN74ALS620A.

The -1 versions of the SN74ALS620A, SN74ALS621A, SN74ALS623A, and SN74AS623  are identical to the standard versions, except that the recommended maximum IOL is increased to 48 mA in the -1 versions.

The SN74ALS620A, SN74ALS621A, SN74ALS623A, and SN74AS623 are characterized for operation from
0°C to 70°C.

Parameters:

Technical/Catalog Information	SN74ALS620ADW
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Logic Type	Transceiver, Inverting
Package / Case	20-SOIC (7.5mm Width)
Packaging	Tube
Mounting Type	Surface Mount
Number of Bits per Element	8
Number of Elements	2 - Dual
Operating Temperature	0°C ~ 70°C
Voltage - Supply	4.5 V ~ 5.5 V
Current - Output High, Low	15mA, 24mA
Drawing Number	296; 4040000-4; DW; 20
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	SN74ALS620ADW SN74ALS620ADW