Description
74245 IC Octal
Bus Transceiver
DIP-20
The SN74LS245N is a high-performance octal bus transceiver designed for asynchronous two-way communication between data buses. Manufactured by Texas Instruments, this device features eight non-inverting buffers with 3-state outputs, facilitating efficient data transfer in digital systems. The direction-control (DIR) input determines the data flow direction, allowing transmission from the A bus to the B bus or vice versa. The output-enable (OE) input can disable the device, effectively isolating the buses to prevent data conflicts. This functionality is crucial in systems where multiple devices share the same data bus, ensuring proper data management and preventing bus contention.
Features:
Octal bidirectional bus interface
Non-inverting 3-state outputs
Specified from -20°C to +85°C
Specifications:
Parameter
Value
Category
Integrated Circuits (ICs)/Logic/Buffers, Drivers, Receivers, Transceivers
Manufacturer
XBLW
Package
DIP-20
Output Type
Tri-State
Operating Temperature
-20℃~+85℃
Series
74LS Series
Number of Bits per Element
8
Quiescent Current (Iq)
80uA
Voltage – Supply
2V~6V
Channel Type
Bidirectional
Number of Channels
1
Propagation Delay
9ns@4.5V,15pF
Pin Configuration:
Pin
Name
Function
1
DIR
Direction control (low: A to B)
2
A0
Data input/output A0
3
A1
Data input/output A1
4
A2
Data input/output A2
5
A3
Data input/output A3
6
A4
Data input/output A4
7
A5
Data input/output A5
8
A6
Data input/output A6
9
A7
Data input/output A7
10
GND
Ground
11
B7
Data input/output B7
12
B6
Data input/output B6
13
B5
Data input/output B5
14
B4
Data input/output B4
15
B3
Data input/output B3
16
B2
Data input/output B2
17
B1
Data input/output B1
18
B0
Data input/output B0
19
OE
Output enable (active low)
20
VCC
Positive supply voltage
Footprint:
Applications:
Microprocessor interfaces.
Memory systems.
Peripheral devices.
Data bus communication systems.
High-speed digital circuits.
Datasheet:
SN74LS245N
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