数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

ST3917BD 数据表(PDF) 8 Page - STMicroelectronics

部件名 ST3917BD
功能描述  SPEECH - TONE/PULSE DIALER - LED INDICATOR
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST3917BD 数据表(HTML) 8 Page - STMicroelectronics

Back Button ST3917BD Datasheet HTML 4Page - STMicroelectronics ST3917BD Datasheet HTML 5Page - STMicroelectronics ST3917BD Datasheet HTML 6Page - STMicroelectronics ST3917BD Datasheet HTML 7Page - STMicroelectronics ST3917BD Datasheet HTML 8Page - STMicroelectronics ST3917BD Datasheet HTML 9Page - STMicroelectronics ST3917BD Datasheet HTML 10Page - STMicroelectronics ST3917BD Datasheet HTML 11Page - STMicroelectronics ST3917BD Datasheet HTML 12Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 16 page
background image
DEVICE OPERATION
During on-hook all keypad inputs are high imped-
ance internally and it requires very low current for
memory retention. At anytime,row inputs are initial-
ized at logic level 1 and column inputs are initialized
at logic level 0 at off-hook. The circuit verifies that
a valid key has been entered by alternately scan-
ning the Row and Column inputs. If the input is still
valid following 32ms of debounce,the digit is stored
into memory, and dialing begins after a pre-signal
delay of approximately 40ms measured from the
initial key closure. Output tone duration is shown in
Table 1.
The device allows manual dialing of an indefinite
number of digits, but if more than 32 digits are
dialed, LND will be inhibited.
Table 4 : DTMF Output Frequencies (Hz)
Key Input
Std
Frequency
Output
Frequency
%in
Deviation
Row 1
Row 2
Row 3
Row 4
Column 1
Column 2
Column 3
697
770
852
941
1209
1336
1477
699.1
766.2
847.4
948
1215.9
1331.7
1471.9
+0.31
-0.49
-0.54
+0.74
+0.57
-0.32
-0.35
Normal Dialing
D D D ...
Normal dialing is straight forward, all keyboard
entries will be stored in the buffer and signalled in
succession.
Hook Flash
D Flash D ...
Hook flash may be entered into the dialed sequence
at any point by keying in the function key, FLASH.
When a FLASH key is pressed, no further key inputs
will be accepteduntil the hookflashfunctionhasbeen
dialed. The key input following aFLASH will be stored
as the initial digit of the new number (overwriting the
numberdialed beforethe FLASH) unless it is another
FLASH. FLASH key pressed immediately afterhook-
switch or LND will not clear the LND buffer unless
digits are entered following the FLASH key.
Flash
LND not cleared
LND Flash
LND not cleared
LND Flash D1 D2
LND buffer will contain D1, D2
Last Number Dialed
Off-Hook LND
Last number redialing is accomplished by entering
the LND key at off-hook or after the FLASH key, the
subsequent LND keys pressed will be ignored.
Sequence
Digit Emitted
OFF-HO OK, D1, D2, ON-HOOK
D1, D2
OFF-HOO K, LND, LND, ON-HOOK
D1, D2
OFF-HOO K, D3, D4, LND, ON-HOOK
D3, D4
OFF-HO OK, LND, ON-HOOK
D3, D4
Last Number Dialed Inhibition
Last number redialing by LND key is inhibited if
there are more than 32 digits stored.
Last Number Dialed Cascading
Digits dial after the LND will cascade into the LND
buffer for the next redialing. In cascade operation,
the keyboard is inhibited upon pressing the LND
key, the LND output must be completed before
acceptance of any key entry.
Sequence
Digit Emitted
OFF-HO OK, D1, D2, ON-HOOK
D1, D2
OFF-HOO K, LND, D3, D4, ON-HOOK D1, D2, D3, D4
OFF-HO OK, LND, ON-HOOK
D1, D2, D3, D4
Pause
Off-Hook D Pause D ...
A pause may be entered into the dialed sequence
at any point by keying in the special function key,
PAUSE. Pause inserts a 3.1 seconds (Tone mode)
or 3.4 seconds (Pulse mode) delay into the dialing
sequence. The total delay, including predigit and
post digit pauses as shown in Table 5.
Table 5 : Special Function Delays
Function
First / Auto
Delay (second)
Pulse
Tone
SOFT-
SWITCH
First
Auto
0.2
1
PAUSE
First
Auto
2.6
3.4
3.0
3.1
Each delay shown in Table 5 represents the time
required from the time the special function key is
depressed until a new digit is dialed.
The time is considered ”FIRST” key if all previous
inputs have been completely dialed. The time is
considered ”AUTO” if in redial, or if previous digits
dialing is still in progress.
ST3917A - ST3917B
8/16


类似零件编号 - ST3917BD

制造商部件名数据表功能描述
logo
List of Unclassifed Man...
ST39 ETC-ST39 Datasheet
155Kb / 1P
   DO-35 Case
logo
Vishay Siliconix
ST390-60T3MI VISHAY-ST390-60T3MI Datasheet
116Kb / 6P
   SuperTan® Wet Tantalum Capacitors With Hermetic Seal
12-May-2022
logo
Coilcraft lnc.
ST394RAT13N_LZ COILCRAFT-ST394RAT13N_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
ST394RAT5N6_LZ COILCRAFT-ST394RAT5N6_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
ST394RAT7N2_LZ COILCRAFT-ST394RAT7N2_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
More results

类似说明 - ST3917BD

制造商部件名数据表功能描述
logo
UMC Corporation
UM91210C UMC-UM91210C Datasheet
877Kb / 14P
   TONE/PULSE DIALER
logo
List of Unclassifed Man...
NT91214 ETC1-NT91214 Datasheet
212Kb / 23P
   Tone/Pulse Dialer
logo
UMC Corporation
UM91214 UMC-UM91214 Datasheet
817Kb / 13P
   Tone / Pulse Dialer
logo
ELAN Microelectronics C...
HM91710A EMC-HM91710A Datasheet
131Kb / 19P
   TONE/PULSE SWITCHABLE DIALER
EM91710 EMC-EM91710 Datasheet
159Kb / 19P
   TONE/PULSE SWITCHABLE DIALER
logo
Sharp Corporation
LR48061 SHARP-LR48061 Datasheet
598Kb / 10P
   Pulse/Tone Dialer LSI
logo
Holtek Semiconductor In...
HT9320 HOLTEK-HT9320_02 Datasheet
369Kb / 29P
   22-Memory Tone/Pulse Dialer
logo
Samsung semiconductor
KS58006 SAMSUNG-KS58006 Datasheet
101Kb / 8P
   TONE/PULSE DIALER WITH REDIAL
logo
Holtek Semiconductor In...
HT93214 HOLTEK-HT93214 Datasheet
194Kb / 16P
   1-memory Tone/Pulse Dialer
logo
UMC Corporation
UM91270 UMC-UM91270 Datasheet
711Kb / 11P
   20 MEMORY TONE/PULSE DIALER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com