M74HC148 datasheet(1/11 Pages) STMICROELECTRONICS

部件名	M74HC148

功能描述	8 TO 3 LINE PRIORITY ENCODER

PDF	11 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 11 page

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July 2001

s

HIGH SPEED:

tPD = 16ns (TYP.) at VCC = 6V

s

LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s

HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 4mA (MIN)

s

BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s

WIDE OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 148

DESCRIPTION

The M74HC148 is an high speed CMOS 8 TO 3

LINE

PRIORITY

ENCODER

fabricated

with

silicon gate C2MOS technology.

The M74HC148 encodes eight data lines to

three-line

(4-2-1)

binary

(octal).

Cascading

circuitry (enable input EI and enable output EO)

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.

M74HC148

8 TO 3 LINE PRIORITY ENCODER

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

M74HC148B1R

SOP

M74HC148M1R

M74HC148RM13TR

TSSOP

M74HC148TTR

TSSOP

DIP

SOP

类似零件编号 - M74HC148

制造商	部件名	数据表	功能描述
STMicroelectronics	M74HC148	252Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Oct-1992
	M74HC148B1R	252Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Oct-1992
	M74HC148C1R	252Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Oct-1992
	M74HC148M1R	252Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Oct-1992

More results

类似说明 - M74HC148

制造商	部件名	数据表	功能描述
STMicroelectronics	M54HC148	252Kb / 11P	8 TO 3 LINE PRIORITY ENCODER Oct-1992
Fairchild Semiconductor	74F148	61Kb / 6P	8-Line to 3-Line Priority Encoder
Fairchild Semiconductor	MM74HC148	77Kb / 8P	8-3 Line Priority Encoder
Hitachi Semiconductor	HD74HC148	45Kb / 8P	8-to-3-line Octal Priority Encoder
List of Unclassifed Man...	GD74HCT148	207Kb / 4P	8-TO-3 LINE PRIORITY ENCODER
National Semiconductor ...	MM74HCT148	215Kb / 5P	8-3 Line Priority Encoder
National Semiconductor ...	MM54HC148	127Kb / 6P	8-3 Line Priority Encoder
Toshiba Semiconductor	TC74HC148AP	353Kb / 9P	8-to-3 Line Priority Encoder
Renesas Technology Corp	HD74LS148	72Kb / 6P	8-line-to-3-line Octal Priority Encoder
Renesas Technology Corp	HD74HC148	79Kb / 6P	8-to-3-line Octal Priority Encoder