参数资料
型号: SN64BCT245NSRE4
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: BCT/FBT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封装: GREEN, PLASTIC, SOP-20
文件页数: 1/12页
文件大小: 483K
代理商: SN64BCT245NSRE4
SN64BCT245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS040A – JANUARY 1990 – REVISED JANUARY 1994
Copyright
1994, Texas Instruments Incorporated
3–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
BiCMOS Design Significantly Reduces I
CCZ
3-State True Outputs Drive Bus Lines
Directly
High-Impedance State During Power Up
and Power Down
ESD Protection Exceeds 2000 V
Per MIL-STD-883C, Method 3015
Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
description
This octal bus transceiver is designed for
asynchronous
communication
between
data
buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon
the logic 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.
The outputs are in a high-impedance state during power up and power down while the supply voltage is less
than approximately 3 V.
The SN64BCT245 is characterized for operation from – 40
°C to 85°C and 0°C to 70°C.
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
OPERATION
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic symbol
logic diagram (positive logic)
A5
6
A6
7
A7
8
A8
9
A2
3
A3
4
A4
5
OE
A1
2
G3
19
3EN2[AB]
B5
14
B6
13
B7
12
B8
11
B1
18
B2
17
B3
16
B4
15
3EN1[BA]
1
DIR
OE
A1
B1
1
2
18
19
To Seven Other Channels
1
2
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
DW OR N PACKAGE
(TOP VIEW)
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.
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