74F623PC Fairchild Semiconductor, 74F623PC Datasheet - Page 2

• Manufacturer Part Number: 74F623PC
• Description: IC BUS TRANSCVR 3ST 8BIT 20DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74Fr

Specifications of 74F623PC

• Logic Type: Transceiver, Non-Inverting
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Current - Output High, Low: 15mA, 64mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74F623

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Unit Loading/Fan Out
Functional Description
The enable inputs GAB and GBA control whether data is
transmitted from the A bus to the B bus or from the B bus to
the A bus. If both GBA and GAB are disabled (GBA HIGH
and GAB LOW), the outputs are in the high impedance
state and data is stored at the A and B busses. When GBA
is active LOW, B data is sent to the A bus. When GAB is
active HIGH, data from the A bus is sent to the B bus. If
both enable inputs are active (GBA LOW and GAB HIGH)
B data is sent to the A bus while A data is sent to the B bus.
Logic Diagrams
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Pin Names
GBA, GAB
A
B
0
0
–A
–B
7
7
Enable Inputs
A Inputs or
3-STATE Outputs
B Inputs or
3-STATE Outputs
Description
74F620
74F623
2
Function Table
H
L
Z
HIGH/LOW
HIGH Voltage Level
LOW Voltage Level
High Impedance
Enable Inputs
3.5/1.083
3.5/1.083
GBA
1.0/1.0
150/40
150/40
H
H
U.L.
L
L
GAB
H
H
L
L
Output I
20 A/ 0.6 mA
70 A/ 0.4 mA
70 A/ 0.4 mA
B Data to A Bus
A Data to B Bus
B Data to A Bus,
A Data to B Bus
Input I
3 mA/64 mA
3 mA/64 mA
74F620
IH
OH
Z
/I
/I
IL
OL
Operation
B Data to A Bus
A Data to B Bus
B Data to A Bus,
A Data to B Bus
74F623
Z