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N74F148D, N74F148D623, N74F14D-623

Table of contents:
Info of N74F148D
Info of N74F148D623
Info of N74F14D-623

N74F148D, N74F148D623, N74F14D-623 Selling Leads, Datasheet

MFG:PHILIPS Package Cooled:SOP D/C:1998

N74F148D, N74F148D623, N74F14D-623 Picture

N74F148D, N74F148D623, N74F14D-623 Datasheet download

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Part Number: N74F148D

MFG: PHILIPS

Package Cooled: SOP

D/C: 1998

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N74F148D General Description

The 74F148 8-input priority encoder accepts data from eight active-Low inputs and provides a binary representation on the three active-Low outputs. A priority is assigned to each input so that when two or more inputs are simultaneously active, the input with the highest priority is represented on the output, with input line I7 having the highest priority. A High on the Enable Input (EI) will force all outputs to the inactive (High) state and allow new data to settle without producing erroneous information at the outputs. A Group Signal (GS) output and an Enable Output (EO) are provided with the three data outputs. The GS is active-Low when any input is Low: this indicates when any input is active. The EO is active-Low when all inputs are High. Using the Enable Output along with the Enable Input allows priority encoding of N input signals. Both EO and GS are active-High when the Enable Input is High.

N74F148D Maximum Ratings

(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)

SYMBOL	PARAMETER	RATING	UNIT
V_CC	Supply voltage	0.5 to +7.0	V
V_IN	Input voltage	0.5 to +7.0	V
I_IN	Input current	30 to +5	mA
V_OUT	Voltage applied to output in High output state	0.5 to VCC	V
I_OUT	Current applied to output in Low output state	40	mA
T_amb	Operating free-air temperature range	0 to +70	°C
T_stg	Storage temperature range	65 to +150	°C

N74F148D Features

• Code conversions
• Multi-channel D/A converter
• Decimal-to-BCD converter
• Cascading for priority encoding of "N" bits
• Input enable capability
• Priority encoding-automatic selection of highest priority input line
• Output enable-active Low when all inputs are High
• Group signal output-active when any input is Low

N74F148D Connection Diagram

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