M74HC148 Datasheet PDF | STMicroelectronics

STMicroelectronics M74HC148

The M74HC148 is an high speed CMOS 8 TO 3 LINE PRIORITY ENCODER fabricated with O silicon gate C2MOS technology. - The M74HC148 encodes eight data lines to t(s) three-line (4-2-1) binary (octal).

Part No.	M74HC148
Datasheet	M74HC148 Download
Manufacturer	STMicroelectronics
Description	8 TO 3 LINE PRIORITY ENCODER
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DESCRIPTION

bs Cascading circuitry (enable input EI and enable output EO) DIP SOP TSSOP ORDER CODES PACKAGE TUBE DIP SOP TSSOP M74HC148B1R M74HC148M1R T&R M74HC148RM13TR M74HC148TTR has been provided to allow octal expansion without the need for external circuitry. Data inputs are active at the low logic level. All inputs are equipped with protection circuits against static discharge and transient excess voltage. Obsolete Produc PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/11 M74HC148 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN

DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION 9, 7, 6 A0 to A2 Data Outputs 10, 11, 12, 13, 1, 2, 3, 4 0 to 7 Data Inputs 15 EO Enable Output 5 EI Enable Input 14 GS Priority Flag Output 8 GND Ground (0V) 16 VCC Positive Supply Voltage ) TRUTH TABLE t(s INPUTS OUTPUTS uc E1 0 1 2 3 4 5 6 7 A2 A1 A0 GS E0 rod H X X X X X X X X H H H H H L H H H H H H H H H H H H L P L X X X X X X X L L L L L H te L X X X X X X L H L L H L H le L X X X X X L H H L H L L H o L X X X...