参数资料
型号: SN74LVC16T245GQLR
厂商: Texas Instruments, Inc.
英文描述: 16 BIT DUAL SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
中文描述: 16位双电源总线收发器可配置电压转换和3态输出
文件页数: 10/17页
文件大小: 327K
代理商: SN74LVC16T245GQLR
SN74LVC16T245
16BIT DUALSUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS
SCES585 JULY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
terminal assignments
12
34
5
6
A
1DIR
NC
1OE
B
1B2
1B1
GND
1A1
1A2
C
1B4
1B3
VCCB
VCCA
1A3
1A4
D
1B6
1B5
GND
1A5
1A6
E
1B8
1B7
1A7
1A8
F
2B1
2B2
2A2
2A1
G
2B3
2B4
GND
2A4
2A3
H
2B5
2B6
VCCB
VCCA
2A6
2A5
J
2B7
2B8
GND
2A8
2A7
K
2DIR
NC
2OE
NC No internal connection
FUNCTION TABLE
(each 8-bit section)
INPUTS
OPERATION
OE
DIR
OPERATION
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic diagram (positive logic)
To Seven Other Channels
1DIR
1A1
1B1
1OE
To Seven Other Channels
2DIR
2A1
2B1
2OE
1
47
24
36
48
2
25
13
PRODUCT
PREVIEW
GQL PACKAGE
(TOP VIEW)
J
H
G
F
E
D
C
B
A
2
13
4
6
5
K
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