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HC645 Datasheet

  • HC645

  • OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

  • 12頁(yè)

  • TI

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SCLS304B 鈥?JANUARY 1996 鈥?REVISED DECEMBER 2002
SN54HC645, SN74HC645
OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
D
Wide Operating Voltage Range of 2 V to 6 V
D
High-Current 3-State Outputs Can Drive Up
D
To 15 LSTTL Loads
Low Power Consumption, 80-碌A(chǔ) Max I
CC
SN54HC645 . . . J OR W PACKAGE
SN74HC645 . . . DW, N, OR NS PACKAGE
(TOP VIEW)
D
D
D
D
Typical t
pd
= 12 ns
鹵6-mA
Output Drive at 5 V
Low Input Current of 1
碌A(chǔ)
Max
True Logic
SN54HC645 . . . FK PACKAGE
(TOP VIEW)
A2
A1
DIR
V
CC
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
A3
A4
A5
A6
A7
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
OE
B1
B2
B3
B4
B5
description/ordering information
These octal bus transceivers are designed for asynchronous two-way communication between data buses.
These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the
level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the
buses are effectively isolated.
ORDERING INFORMATION
TA
PDIP 鈥?N
鈥?0擄C to 85擄C
40擄C
SOIC 鈥?DW
SOP 鈥?NS
CDIP 鈥?J
鈥?5擄C to 125擄C
CFP 鈥?W
LCCC 鈥?FK
PACKAGE鈥?/div>
Tube
Tube
Tape and reel
Tape and reel
Tube
Tube
Tube
ORDERABLE
PART NUMBER
SN74HC645N
SN74HC645DW
SN74HC645DWR
SN74HC645NSR
SNJ54HC645J
SNJ54HC645W
SNJ54HC645FK
HC645
HC645
SNJ54HC645J
SNJ54HC645W
SNJ54HC645FK
TOP-SIDE
MARKING
SN74HC645N
鈥?Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OE
L
L
H
DIR
L
H
X
OPERATION
B data to A bus
A data to B bus
Isolation
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2002, Texas Instruments Incorporated
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
A8
GND
B8
B7
B6
1

HC645相關(guān)型號(hào)PDF文件下載

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  • 英文版
    14 PIN DIP HCMOS/TTL COMPATIBLE
    CONNOR-WINFIELD...
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    14 PIN DIP 3.3V HCMOS TRI-STATE E/D
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