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參數(shù)資料
| 型號(hào)： | SN74CBT3833CDGVR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | CBT/FST/QS/5C/B SERIES, 5 2-BIT EXCHANGER, TRUE OUTPUT, PDSO24 |
| 封裝： | PLASTIC, TVSOP-24 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大?。?/td> | 517K |
| 代理商： | SN74CBT3833CDGVR |
SN74CBT3383C
10BIT FET BUSEXCHANGE SWITCH
5V BUS SWITCH WITH -2V UNDERSHOOT PROTECTION
SCDS175 SEPTEMBER 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The SN74CBT3383C is a high-speed TTL-compatible FET bus-exchange switch with low ON-state resistance
(ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the
SN74CBT3383C provides protection for undershoot up to 2 V by sensing an undershoot event and ensuring
that the switch remains in the proper OFF state.
The SN74CBT3383C is organized as a 10-bit bus switch, or as a 5-bit bus-exchange switch with a single
output-enable (BE) input that provides data exchanging between four signal ports. The select (BX) input controls
the data path of the bus-exchange switch. When BE is low, the A port is connected to the B port, allowing
bidirectional data flow between ports. When BE is high, a high-impedance state exists between the A and B
ports.
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that
damaging current will not backflow through the device when it is powered down. The device has isolation during
power off.
To ensure the high-impedance state during power up or power down, BE 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.
FUNCTION TABLE
(each 5-bit bus-exchange)
INPUTS
INPUTS/OUTPUTS
FUNCTION
BE
BX
1A15A1
1A25A2
FUNCTION
L
1B15B1
1B25B2
A1 port = B1 port,
A2 port = B2 port
L
H
1B25B2
1B15B1
A1 port = B2 port,
A2 port = B1 port
H
X
Z
Disconnect
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