- 您現在的位置：買賣IC網 > PDF目錄360416 > 74ALVC373 (NXP Semiconductors N.V.) Octal D-type transparent latch 3-state PDF資料下載
參數資料
| 型號： | 74ALVC373 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal D-type transparent latch 3-state |
| 中文描述： | 八路D型透明鎖存器三態(tài) |
| 文件頁數： | 14/20頁 |
| 文件大小： | 97K |
| 代理商： | 74ALVC373 |
2002 Feb 26
14
Philips Semiconductors
Product specification
Octal D-type transparent latch; 3-state
74ALVC373
SOLDERING
Introduction to soldering surface mount packages
Thistextgivesaverybriefinsighttoacomplextechnology.
A more in-depth account of soldering ICs can be found in
our “Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all surface
mount IC packages. Wave soldering can still be used for
certainsurfacemountICs,butitisnotsuitableforfinepitch
SMDs. In these situations reflow soldering is
recommended.
Reflow soldering
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
convection or convection/infrared heating in a conveyor
type oven. Throughput times (preheating, soldering and
cooling) vary between 100 and 200 seconds depending
on heating method.
Typical reflow peak temperatures range from
215 to 250
°
C. The top-surface temperature of the
packages should preferable be kept below 220
°
C for
thick/large packages, and below 235
°
C for small/thin
packages.
Wave soldering
Conventional single wave soldering is not recommended
forsurfacemountdevices(SMDs)orprinted-circuitboards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
If wave soldering is used the following conditions must be
observed for optimal results:
Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is
preferred
to be parallel to the
transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis
must
be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
Forpackageswithleadsonfoursides,thefootprintmust
be placed at a 45
°
angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250
°
C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Manual soldering
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300
°
C.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320
°
C.
相關PDF資料 |
PDF描述 |
|---|---|
| 74ALVC374 | Quadruple Bus Buffer Gates With 3-State Outputs 14-PDIP -40 to 85 |
| 74ALVC541 | Octal buffer/line driver; 3-state |
| 74ALVC573 | Octal D-type transparent latch 3-state |
| 74ALVC574 | Octal D-type flip-flop positive edge-trigger 3-state |
| 74ALVC74 | Dual D-type flip-flop with set and reset; positive-edge trigger |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 74ALVC373BQ | 制造商:NXP Semiconductors 功能描述:IC LATCH D TYPE OCTAL DHVQFN20 制造商:NXP Semiconductors 功能描述:IC, LATCH, D TYPE, OCTAL, DHVQFN20 制造商:NXP Semiconductors 功能描述:IC, LATCH, D TYPE, OCTAL, DHVQFN20, Latch Type:D Type Transparent, Output Curren |
| 74ALVC373BQ,115 | 功能描述:閉鎖 3.3V OCTAL D-TYPE 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 |
| 74ALVC373BQ-G | 功能描述:閉鎖 3.3V OCTAL D-TYPE TRANSP LATCH 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 |
| 74ALVC373D | 功能描述:閉鎖 3.3V OCT D-TYPE TRANSP LTCH 3S 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 |
| 74ALVC373D,112 | 功能描述:閉鎖 3.3V OCT D-TYPE 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。