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參數(shù)資料
| 型號： | SN74AS821FN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Bus Buffer; Package: SOEIAJ-20; No of Pins: 20; Container: Rail; Qty per Container: 40 |
| 中文描述： | 10位總線接口倒裝3觸發(fā)器態(tài)輸出 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 86K |
| 代理商： | SN74AS821FN |
SN54AS821, SN54AS822, SN74AS821, SN74AS822
10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS
SDAS230 – D2825, DECEMBER 1983 – REVISED JANUARY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
1986, Texas Instruments Incorporated
5BASIC
1
Functionally Equivalent to AMD’s AM29821
and AM29822
Provides Extra Data Width Necessary for
Wider Address/Data Paths or Buses With
Parity
Outputs Have Undershoot Protection
Circuitry
Powerup High-impedance State
Package Options Include Plastic Small
Outline Packages, Both Plastic and
Ceramic Chip Carriers, and Standard
Plastic and Ceramic 300-mil DIPs
Buffered Control Inputs to Reduce DC
Loading Effects
Dependable Texas Instruments Quality and
Reliability
description
These 10-bit flip-flops feature 3-state outputs designed specifically for driving highly-capacitive or relatively
low-impedance loads. They are particularly suitable for implementing wider buffer registers, I/O ports,
bidirectional bus drivers with parity, and working registers.
The ten flip-flops are edge-triggered D-type flip-flops. On the positive transition of the clock the Q outputs on
the ’AS821 will be true, and on the ’AS822 will be complementary to the data input.
A buffered output-control input can be used to place the ten outputs in either a normal logic state (high or low
levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines
significantly. The high-impedance state and increased drive provide the capability to drive the bus lines in a
bus-organized system without need for interface or pullup components. The output control (OC) does not affect
the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs
are in the high-impedance state.
The SN54AS’ family is characterized for operation over the full military temperature range of –55
°
C to 125
°
C.
The SN74AS’ family is characterized for operation from 0
°
C to 70
°
C.
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24
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20
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13
OC
1D
2D
3D
4D
5D
6D
7D
8D
9D
10D
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
9Q
10Q
CLK
SN54AS822 . . . JT PACKAGE
SN74AS822 . . . DW OR NT PACKAGE
(TOP VIEW)
3 2 1
13 14
5
6
7
8
9
10
11
3Q
4Q
5Q
NC
6Q
7Q
8Q
3D
4D
5D
NC
6D
7D
8D
4
15 16 17 18
1
G
N
C
1
9
2
1
O
N
SN54AS821 . . . FK PACKAGE
SN74AS821 . . . FN PACKAGE
(TOP VIEW)
28 27 2625
24
23
22
21
20
19
12
9
1
2
V
3 2 1
13 14
5
6
7
8
9
10
11
3Q
4Q
5Q
NC
6Q
7Q
8Q
3D
4D
5D
NC
6D
7D
8D
4
15 16 17 18
1
G
N
C
1
9
2
1
O
N
SN54AS822 . . . FK PACKAGE
SN74AS822 . . . FN PACKAGE
(TOP VIEW)
28 27 2625
24
23
22
21
20
19
12
9
1
2
V
NC–No internal connection
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5
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12
24
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20
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16
15
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OC
1D
2D
3D
4D
5D
6D
7D
8D
9D
10D
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
9Q
10Q
V
CC
SN54AS821 . . . JT PACKAGE
SN74AS821 . . . DW OR NT 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74AS823ADW | 功能描述:觸發(fā)器 9-Bit Bus-Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| SN74AS823ADWE4 | 功能描述:觸發(fā)器 9-Bit Bus-Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| SN74AS823ADWG4 | 功能描述:觸發(fā)器 9B Bus Interface FlipFlops RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| SN74AS823ADWR | 功能描述:觸發(fā)器 9-Bit Bus-Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| SN74AS823ADWRE4 | 功能描述:觸發(fā)器 9-Bit Bus-Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
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