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參數資料
| 型號： | DM74AS873 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 9-Bit Bus Transceiver With 3-State Outputs 24-TSSOP -40 to 85 |
| 中文描述： | 雙4位D型透明鎖存器 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 50K |
| 代理商： | DM74AS873 |
2003 Fairchild Semiconductor Corporation
DS006330
www.fairchildsemi.com
December 1986
Revised July 2003
D
DM74AS873
Dual 4-Bit D-Type Transparent Latches
with 3-STATE Outputs
General Description
These dual 4-bit registers feature totem-pole 3-STATE out-
puts designed specifically for driving highly-capacitive or
relatively low-impedance loads. The high-impedance state
and increased high-logic-level drive provide these registers
with the capability of being connected directly to and driv-
ing the bus lines in a bus-organized system without need
for interface or pull-up components. They are particularly
attractive for implementing buffer registers, I/O ports, bidi-
rectional bus drivers, and working registers.
The eight latches of the DM74AS873 are transparent D-
type latches meaning that while the enable (G) is HIGH the
Q outputs will follow the data (D) inputs. When the enable
is taken LOW the output will be latched at the level of the
data that was set up.
A buffered output control input can be used to place the
eight outputs in either a normal logic state (HIGH or LOW
logic levels) or a high-impedance state. In the high-imped-
ance state the outputs neither load nor drive the bus lines
significantly.
The output control does not affect the internal operation of
the latches. That is, the old data can be retained or new
data can be entered even while the outputs are OFF.
The pinout is arranged to ease printed circuit board layout.
All data inputs are on one side of the package while all out-
puts are on the other side.
Features
I
Switching specifications at 50 pF
I
Switching specifications guaranteed over full tempera-
ture and V
CC
range
I
Advanced oxide-isolated, ion-implanted Schottky TTL
process
I
3-STATE buffer-type outputs drive bus lines directly
I
Space Saving 300 Mil Wide Package
I
Bus structured pinout
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Order Number
DM74AS873NT
Package Number
N24C
Package Description
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
相關PDF資料 |
PDF描述 |
|---|---|
| DM74AS873NT | Dual 4-Bit D-Type Transparent Latches |
| DM74AS874 | Dual 4-Bit D-Type Edge-Triggered Flip-Flop |
| DM74AS874NT | 9-Bit Bus Transceiver With 3-State Outputs 24-TSSOP -40 to 85 |
| DM74AS874WM | 9-Bit Bus Transceiver With 3-State Outputs 24-TSSOP -40 to 85 |
| DM74LS00 | Quad 2-Input NAND Gate |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DM74AS873NT | 功能描述:閉鎖 Dl 4-Bit D Tran Lat RoHS:否 制造商:Micrel 電路數量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
| DM74AS874NT | 功能描述:觸發器 Dl 4-Bit D Tran Lat RoHS:否 制造商:Texas Instruments 電路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| DM74AS874WM | 功能描述:觸發器 Dl 4-Bit D Tran Lat RoHS:否 制造商:Texas Instruments 電路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| DM74AS874WMX | 功能描述:觸發器 Dl 4-Bit D Tran Lat RoHS:否 制造商:Texas Instruments 電路數量: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 安裝風格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| DM74AS881BNT | 制造商:Texas Instruments 功能描述: |
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