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54F373FM датащи(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали 54F373FM
подробное описание детали  Octal Transparent Latch with TRI-STATE Outputs
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

54F373FM датащи(HTML) 2 Page - National Semiconductor (TI)

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Unit LoadingFan Out
54F74F
Pin Names
Description
UL
Input IIH IIL
HIGHLOW
Output IOH IOL
D0–D7
Data Inputs
1010
20 mA b06 mA
LE
Latch Enable Input (Active HIGH)
1010
20 mA b06 mA
OE
Output Enable Input (Active LOW)
1010
20 mA b06 mA
O0–O7
TRI-STATE Latch Outputs
15040 (333)
b
3 mA24 mA (20 mA)
Functional Description
The ’F373 contains eight D-type latches with TRI-STATE
output buffers When the Latch Enable (LE) input is HIGH
data on the Dn inputs enters the latches In this condition
the latches are transparent ie a latch output will change
state each time its D input changes When LE is LOW the
latches store the information that was present on the D in-
puts a setup time preceding the HIGH-to-LOW transition of
LE The TRI-STATE buffers are controlled by the Output
Enable (OE) input When OE is LOW the buffers are in the
bi-state mode When OE is HIGH the buffers are in the high
impedance mode but this does not interfere with entering
new data into the latches
Truth Table
Inputs
Output
LE
OE
Dn
On
HLH
H
HL
L
L
LL
X
On (no change)
XHX
Z
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Z e High Impedance State
Logic Diagram
TLF9523 – 5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
2


Аналогичный номер детали - 54F373FM

производительномер деталидатащиподробное описание детали
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Аналогичное описание - 54F373FM

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