DM74ALS640AN

Number of Channels per Chip : 8
Output Type : 3-State
Maximum Operating Temperature : + 70 C
Packaging : Tube
Supply Voltage - Max : 5.5 V
Low Level Output Current : 24 mA
Supply Voltage - Min : 4.5 V
Logic Type : Bipolar
Logic Family : 74ALS
Input Level : TTL
Output Level : TTL
High Level Output Current : - 15 mA
Package / Case : PDIP-20
Propagation Delay Time : 11 ns


Features:

·  Advanced Oxide-isolated Ion-implanted Schottky TTL process
·  Switching performance is guaranteed over full temperature
   and VCC supply range
·  Switching performance specified at 50 pF
·  PNP input design reduces input loading


Pinout




Specifications

Supply Voltage ...........................................................7V
Input Voltage
Control Inputs............................................................ 7V
I/O ports .................................................................5.5V
Operating Free Air Temperature Range.... 0°C to +70°C
Storage Temperature Range............... -65°C to +150°C
Typical qJA
N Package .......................................................53.0°C/W
M Package....................................................... 72.0°C/W
Note 1: The "Absolute Maximum Ratings" are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The "Recommended Operating Conditions" table will define the conditions
for actual device operation.


Description

This inverting octal bus transceiver,DM74ALS640AN is designed for asynchronous two-way communication between data busses. This DM74ALS640AN device transmits data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input. The enable input (G) can be used to disable the device so the busses are effectively isolated.