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54F245 Datasheet(数据表) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件型号  54F245
说明  Octal Bidirectional Transceiver with TRI-STATE Outputs
下载  8 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 

   
 2 page
background image
Connection Diagrams
Pin Assignment for
DIP SOIC SSOP and Flatpak
TLF9503 – 1
Pin Assignment
for LCC
TLF9503 – 2
Unit LoadingFan Out
54F74F
Pin Names
Description
UL
Input IIH IIL
HIGHLOW
Output IOH IOL
OE
Output Enable Input (Active LOW)
1020
20 mA b12 mA
TR
TransmitReceive Input
1020
20 mA b12 mA
A0–A7
Side A Inputs or
351083
70 mA b065 mA
TRI-STATE Outputs
15040(383)
b
3 mA24 mA (20 mA)
B0–B7
Side B Inputs or
351083
70 mA b065 mA
TRI-STATE Outputs
6001066(80)
b
12 mA64 mA (48 mA)
Truth Table
Inputs
Output
OE
TR
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
High Z State
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
2




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