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參數(shù)資料
| 型號： | SN54ALVTH16646 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs( 2.5V/3.3V 16位總線收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 2.5-V/3.3-V 16位總線收發(fā)器三態(tài)輸出（2.5V/3.3V的16位總線收發(fā)器（三態(tài)輸出）） |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 276K |
| 代理商： | SN54ALVTH16646 |
SN54ALVTH16646, SN74ALVTH16646
2.5-V/3.3-V 16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCES072A – JUNE 1996 – REVISED JULY 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
When V
CC
is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.2 V, OE should be tied to V
CC
through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN74ALVTH16646 is available in TI’s thin very small-outline package (DGV), which provides the same I/O
pin count and functionality of standard Widebus packages in less than half the printed circuit board area.
The SN54ALVTH16646 is characterized for operation over the full military temperature range of –55
°
C to
125
°
C. The SN74ALVTH16646 is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
INPUTS
DATA I/OS
OPERATION OR FUNCTION
OE
X
DIR
X
CLKAB
=
CLKBA
X
↑
↑
H or L
SAB
X
SBA
X
A1 – A8
Input
Unspecified
B1 – B8
Unspecified
Store A, B unspecified
Store B, A unspecified
X
X
X
↑
X
X
Input
H
X
X
X
Input
Input
Store A and B data
H
X
H or L
X
X
Input disabled
Input disabled
Isolation, hold storage
L
L
X
X
X
L
Output
Input
Real-time B data to A bus
L
L
X
H or L
X
H
Output
Input
Stored B data to A bus
L
H
X
X
L
X
Input
Output
Real-time A data to B bus
L
H
H or L
X
H
X
Input
Output
Stored A data to B bus
The data output functions can be enabled or disabled by various signals at OE and DIR. Data input functions are always enabled; i.e., data at
the bus pins is stored on every low-to-high transition of the clock inputs.
P
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| SN74ALVTH16646 | 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs( 2.5V/3.3V16位總線收發(fā)器(三態(tài)輸出)) |
| SN54ALVTH16821WD | 2.5-V/3.3-V 20-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS |
| SN74ALVTH16821DGG | 2.5-V/3.3-V 20-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS |
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