Homedatasheet54F251ADMQB

54F251ADMQB Datasheet

Military/Aerospace->FAST
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Description

Features, Applications

The is a high-speed 8-input digital multiplexer It provides in one package the ability to select one bit of data from up to eight sources It can be used as a universal function generator to generate any logic function of four variables Both assertion and negation outputs are provided

Features

Multifunctional capability On-chip select logic decoding Inverting and non-inverting TRI-STATE outputs

Package Description (0 300 Wide) Molded Dual-In-Line 16-Lead Ceramic Dual-In-Line (0 150 Wide) Molded Small Outline JEDEC (0 300 Wide) Molded Small Outline EIAJ 16-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C

Note 1 Devices also available in 13 reel Use suffix e SCX and SJX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB

TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation

Select Inputs TRI-STATE Output Enable Input (Active LOW) Multiplexer Inputs TRI-STATE Multiplexer Output Complementary TRI-STATE Multiplexer Output

This device is a logical implementation of a single-pole 8position switch with the switch position controlled by the state of three Select inputs S1 S2 Both assertion and negation outputs are provided The Output Enable input (OE) is active LOW When it is activated the logic function provided at the output S1 S2) When the Output Enable is HIGH both outputs are in the high impedance (High Z) state This feature allows multiplexer expansion by tying the outputs to 128 devices together When the outputs of the TRI-STATE devices are tied together all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings The Output Enable signals should be designed to ensure there is no overlap in the active LOW portion of the enable voltages

H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays

If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) Standard Output TRI-STATE Output

Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired Functional operation under these conditions is not implied Note 2 Either voltage limit or current limit is sufficient to protect inputs

Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial

Symbol VIH VIL VCD VOH Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 74F 5% VCC 74F 5% VCC 54F 10% VCC 74F 10% VCC 54F 74F

Conditions Recognized as a HIGH Signal Recognized as a LOW Signal
VOL IIH IBVI ICEX VID IOD IIL IOZH IOZL IOS IZZ ICCL ICCZ

Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Leakage Current Output Leakage Current

IOL 20 mA IOL 24 mA VIN 2 7V VIN 7 0V VOUT e VCC IID 9 mA All Other Pins Grounded VIOD 150 mV All Other Pins Grounded VIN 0 5V VOUT 2 7V VOUT 0 5V VOUT e 0V VOUT VO e LOW VO e HIGH Z

Output Short-Circuit Current Bus Drainage Test Power Supply Current Power Supply Current

Features

Parameters

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Manufacturer information

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