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74LVC8T245 датащи(PDF) 21 Page - Nexperia B.V. All rights reserved

номер детали 74LVC8T245
подробное описание детали  8-bit dual supply translating transceiver; 3-state
PDF  28 Pages
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производитель  NEXPERIA [Nexperia B.V. All rights reserved]
домашняя страница  https://www.nexperia.com/
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74LVC8T245 датащи(HTML) 21 Page - Nexperia B.V. All rights reserved

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74LVC_LVCH8T245
All information provided in this document is subject to legal disclaimers.
Product data sheet
Rev. 3 — 12 December 2011
21 of 28
Nexperia
74LVC8T245; 74LVCH8T245
8-bit dual supply translating transceiver; 3-state
13. Application information
13.1 Unidirectional logic level-shifting application
The circuit given in Figure 14 is an example of the 74LVC8T245; 74LVCH8T245 being
used in an unidirectional logic level-shifting application.
Schematic given for one channel.
Fig 14. Unidirectional logic level-shifting application
Table 15.
Description unidirectional logic level-shifting application
Name
Function
Description
VCC(A)
VCC1
supply voltage of system-1 (1.2 V to 5.5 V)
GND
GND
device GND
A
OUT
output level depends on VCC1 voltage
B
IN
input threshold value depends on VCC2 voltage
DIR
DIR
the GND (LOW level) determines B port to A port direction
VCC(B)
VCC2
supply voltage of system-2 (1.2 V to 5.5 V)
OE
OE
The GND (LOW level) enables the output ports
001aak438
74LVC8T245
74LVCH8T245
VCC1
system-1
system-2
VCC1
VCC2
VCC2
VCC(A)
VCC(B)
GND
DIR
Bn
OE
An



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