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參數資料
| 型號： | DM74ALS874B |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Dual 4-Bit D-Type Edge-Triggered Flip-Flop with 3-STATE Outputs |
| 中文描述： | 雙4位D型邊沿觸發器具有三態輸出 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 56K |
| 代理商： | DM74ALS874B |
2000 Fairchild Semiconductor Corporation
DS006244
www.fairchildsemi.com
April 1984
Revised February 2000
D
DM74ALS874B
Dual 4-Bit D-Type Edge-Triggered Flip-Flop
with 3-STATE Outputs
General Description
This dual 4-bit register features 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 this register
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. It is particularly attrac-
tive for implementing buffer registers, I/O ports, bidirec-
tional bus drivers, and working registers.
The eight flip-flops of the DM74ALS874B are edge-trig-
gered D-type flip-flops. On the positive transition of the
clock, the Q outputs will be set to the logic states that were
set up at the D inputs.
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 flip-flops. That is, the old data can be retained or new
data can be entered even while the outputs are OFF.
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
Asynchronous clear
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Order Number
DM74ALS874BWM
DM74ALS874BNT
Package Number
M24B
N24C
Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide
相關PDF資料 |
PDF描述 |
|---|---|
| DM74ALS874BNT | Dual 4-Bit D-Type Edge-Triggered Flip-Flop with 3-STATE Outputs |
| DM74ALS874BWM | round pushbutton SPST pushbutton switch with momentary function |
| DM74AS00 | Quad 2-Input NAND Gate |
| DM74AS00M | Quad 2-Input NAND Gate |
| DM74AS00N | Replaced by SN74LVC841A : 10-Bit Bus-Interface D-Type Latch With 3-State Outputs 24-SSOP -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DM74ALS874BNT | 功能描述:觸發器 Dl 4-Bit D Flip-Flop 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 |
| DM74ALS874BNT_Q | 功能描述:觸發器 Dl 4-Bit D Flip-Flop 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 |
| DM74ALS874BWM | 功能描述:觸發器 Dl 4-Bit D Flip-Flop 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 |
| DM74ALS874BWMX | 功能描述:觸發器 Dl 4-Bit D Flip-Flop 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 |
| DM74AS00M | 功能描述:邏輯門 Qd 2-Input NAND Gate RoHS:否 制造商:Texas Instruments 產品:OR 邏輯系列:LVC 柵極數量:2 線路數量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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