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参数资料
| 型号： | SNJ54AS646FK |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | AS SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CQCC28 |
| 封装： | CERAMIC, LCC-28 |
| 文件页数： | 22/28页 |
| 文件大小： | 658K |
| 代理商： | SNJ54AS646FK |
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SN54ALS646, SN54ALS648, SN54AS646
SN74ALS646A, SN74ALS648A, SN74AS646, SN74AS648
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SDAS039F – DECEMBER 1983 – REVISED JANUARY 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Function Tables
SN54ALS646, SN54AS646, SN74ALS646A, SN74AS646
INPUTS
DATA I/O
OPERATION OR FUNCTION
OE
DIR
CLKAB
CLKBA
SAB
SBA
A1– A8
B1– B8
OPERATION OR FUNCTION
X
↑
X
Input
Unspecified
Store A, B unspecified
X
XX
↑
X
Unspecified
Input
Store B, A unspecified
H
X
↑
X
Input
Store A and B data
H
X
H or L
X
Input disabled
Isolation, hold storage
L
X
L
Output
Input
Real-time B data to A bus
L
X
H or L
X
H
Output
Input
Stored B data to A bus
L
H
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 terminals is stored on every low-to-high transition of the clock inputs.
SN54ALS648, SN74ALS648A, SN74AS648
INPUTS
DATA I/O
OPERATION OR FUNCTION
OE
DIR
CLKAB
CLKBA
SAB
SBA
A1– A8
B1– B8
OPERATION OR FUNCTION
X
↑
X
Input
Unspecified
Store A, B unspecified
X
XX
↑
X
Unspecified
Input
Store B, A unspecified
H
X
↑
X
Input
Store A and B data
H
X
H or L
X
Input disabled
Isolation, hold storage
L
X
L
Output
Input
Real-time B data to A bus
L
X
H or L
X
H
Output
Input
Stored B data to A bus
L
H
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 terminals is stored on every low-to-high transition of the clock inputs.
相关PDF资料 |
PDF描述 |
|---|---|
| SN74ALS646A-1DW | ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| SN74ALS648ADWRE4 | ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24 |
| SN74ALS651ADWRE4 | ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24 |
| SN74ALS651ADWR | ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24 |
| SN74ALS651ADW | ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SNJ54AS646JT | 制造商:Texas Instruments 功能描述: |
| SNJ54AS652JT | 制造商:Texas Instruments 功能描述: |
| SNJ54AS652W | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SNJ54AS74AJ | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:Flip Flop D-Type Pos-Edge 2-Element 14-Pin CDIP Tube |
| SNJ54AS74J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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