HD74HC643 PDF даташит
Спецификация HD74HC643 изготовлена «Hitachi Semiconductor» и имеет функцию, называемую «Octal Bus Transceivers (with 3-state outputs)». |
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Детали детали
Номер произв | HD74HC643 |
Описание | Octal Bus Transceivers (with 3-state outputs) |
Производители | Hitachi Semiconductor |
логотип |
11 Pages
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HD74HC640/HD74HC643
Octal Bus Transceivers (with 3-state outputs)
Description
Each device has an active enable G and a direction control input, DIR. when DIR is high, data flows from
the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The
HD74HC640 transfers inverted data from one bus to other and the HD74HC643 transfers inverted data
from the A bus to the B bus and true data from the B bus to the A bus.
Features
• High Speed Operation: tpd = 12 ns typ (CL = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
Function Table
Control Inputs
G
L
L
H
DIR
L
H
X
Operation
HD74HC640
B data to A bus
A data to B bus
Isolation
HD74HC643
B data to A bus
A data to B bus
Isolation
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HD74HC640/HD74HC643
Pin Arrangement
HD74HC640
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
(Top View)
20 VCC
19 Enable G
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
2
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HD74HC643
HD74HC640/HD74HC643
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 VCC
19 Enable G
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
(Top View)
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage
Output voltage
Output current
DC current drain per VCC , GND
DC input diode current
DC output diode current
Power Dissipation per package
Storage temperature
Symbol
VCC
VIN
VOUT
I OUT
ICC, IGND
I IK
I OK
PT
Tstg
Rating
–0.5 to +7.0
–0.5 to VCC + 0.5
–0.5 to VCC + 0.5
±35
±75
±20
±20
500
–65 to +150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
3
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Номер в каталоге | Описание | Производители |
HD74HC640 | Octal Bus Transceivers (with 3-state outputs) | Hitachi Semiconductor |
HD74HC640 | Octal Bus Transceivers | Renesas |
HD74HC643 | Octal Bus Transceivers (with 3-state outputs) | Hitachi Semiconductor |
HD74HC643 | Octal Bus Transceivers | Renesas |
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DataSheet26.com | 2020 | Контакты | Поиск |