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$5000SN74121N
Monostable multivibrator with Schmitt-trigger inputs
Brands: Texas Instruments
Mfr.Part #: SN74121N
Datasheet: SN74121N Datasheet (PDF)
Package/Case: PDIP (N)-14
RoHS Status:
Stock Condition: 4,366 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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SN74121N General Description
These multivibrators feature dual negative-transition-triggered inputs and a single positive-transition-triggered input which can be used as an inhibit input. Complementary output pulses are provided.
Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Schmitt-trigger input circuitry (TTL hysteresis) for the B input allow jitter-free triggering from inputs with transition rates as slow as 1 volt/second, providing the circuit with an excellent noise immunity of typically 1.2 volts. A high immunity to VCC noise of typically 1.5 volts is also provided by internal latching circuitry.
Once fired, the outputs are independent of further transitions of the inputs and are a function only of the timing components. Input pulses may be of any duration relative to the output puls. Output pulse length may be varied from 40 nanoseconds to 28 seconds by choosing appropriate timing components. With no external timing components (i.e., Rint connected to VCC, Cext and Rext/Cext open), an output pulse of typically 30 or 35 nanoseconds is achieved which may be used as a d-c triggered reset signal. Output rise and fall times are TTL compatible and independent of pulse length.
Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature. In most application, pulse stability will only be limited by the accuracy of external timing components.
Jitter-free operation is maintained over the full temperature and VCC ranges for more than six decades of timing capacitance (10 pF to 10 µF) and more than one decade of timing resistance (2 k may be used. Also, the range of jitter-free output pulse widths is extended if VCC is held to 5 volts and free-air temperature is 25°C. Duty cycles as high as 90% are achieved when using maximum recommended RT. Higher duty cycles are available if a certain amount of pulse-width jitter is allowed.
Features
- Programmable Output Pulse Width With Rint.35 ns Typ With Rext/Cext .40 ns to 28 Seconds
- Internal Compensation for Virtual Temperature Independence
- Jitter-Free Operation up to 90% Duty Cycle
- Inhibit Capability
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Number of channels | 1 | Supply voltage (min) (V) | 4.75 |
Supply voltage (max) (V) | 5.25 | Technology family | TTL |
Input type | Bipolar | Output type | Push-Pull |
Supply current (µA) | 66000 | IOL (max) (mA) | 16 |
IOH (max) (mA) | -0.8 | Features | Standard speed (tpd > 50ns) |
Operating temperature range (°C) | 0 to 70 |
Shipping
Shipping Type | Ship Fee | Lead Time | |
---|---|---|---|
DHL | $20.00-$40.00 (0.50 KG) | 2-5 days | |
Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 days | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
Wire Transfer | charge US$30.00 banking fee. | |
Paypal | charge 4.0% service fee. | |
Credit Card | charge 3.5% service fee. | |
Western Union | charge US.00 banking fee. | |
Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step1 :Product
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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Step6 :bar-code shipping tag
All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
We provide high quality products, thoughtful service and after sale guarantee
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We have rich products, can meet your various needs.
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Minimum order quantity starts from 1pcs.
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Lowest international shipping fee starts from $0.00
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365 days quality guarantee for all products