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參數資料
| 型號： | TLC551Y |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 定時器 |
| 英文描述： | LinCMOSE TIMERS |
| 中文描述： | LinCMOSE定時器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 277K |
| 代理商： | TLC551Y |
TLC551, TLC551Y
LinCMOS
TIMERS
SLFS044B – FEBRUARY 1984 – REVISED SEPTEMBER 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Very Low Power Consumption
1 mW Typ at V
DD
= 5 V
Capable of Operation in Astable Mode
CMOS Output Capable of Swinging Rail
to Rail
High Output-Current Capability
Sink 100 mA Typ
Source 10 mA Typ
Output Fully Compatible With CMOS, TTL,
and MOS
Low Supply Current Reduces Spikes
During Output Transitions
Single-Supply Operation From 1 V to 15 V
Functionally Interchangeable With the
NE555; Has Same Pinout
ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015.2
description
The TLC551 is a monolithic timing circuit
fabricated using the TI LinCMOS
process. The
timer is fully compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. Compared
to the NE555 timer, this device uses smaller timing capacitors because of its high input impedance. As a result,
more accurate time delays and oscillations are possible. Power consumption is low across the full range of
power supply voltage.
Like the NE555, the TLC551 has a trigger level equal to approximately one-third of the supply voltage and a
threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of
the control voltage terminal (CONT). When the trigger input (TRIG) falls below the trigger level, the flip-flop is
set and the output goes high. If TRIG is above the trigger level and the threshold input (THRES) is above the
threshold level, the flip-flop is reset and the output is low. The reset input (RESET) can override all other inputs
and can be used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low.
Whenever the output is low, a low-impedance path is provided between DISCH and GND. All unused inputs
should be tied to an appropriate logic level to prevent false triggering.
While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC551 exhibits greatly
reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling
capacitors required by the NE555.
The TLC551C is characterized for operation from 0
°
C to 70
°
C.
This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These
circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C,
Method 3015; however, it is advised that precautions be taken to avoid application of any voltage higher than maximum-rated
voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device
should be placed in conductive foam. In a circuit, unused inputs should always be connected to an appropriated logic voltage level,
preferably either supply voltage or ground. Specific guidelines for handling devices of this type are contained in the publication
Guidelines for Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assembliesavailable from Texas Instruments.
LinCMOS is a trademark of Texas Instruments Incorporated.
Copyright
1997, Texas Instruments Incorporated
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.
D, DB, P, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
GND
TRIG
OUT
RESET
V
DD
DISCH
THRES
CONT
GND
RESET
CONT
VDD
8
1
THRES
TRIG
R
R
R
DISCH
OUT
S
R
R1
RESET can override TRIG, which can override THRES.
5
6
2
1
7
3
functional block diagram
4
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TLC552 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINCMOSE TIMER |
| TLC552C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINCMOSE⑩ TIMER |
| TLC552C_06 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINCMOSE⑩ TIMER |
| TLC552CD | 功能描述:計時器和支持產品 CMOS RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| TLC552CDG4 | 功能描述:計時器和支持產品 CMOS RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內部定時器數量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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