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M74HC148 Datasheet(PDF) 1 Page - STMicroelectronics

Part # M74HC148
Description  8 TO 3 LINE PRIORITY ENCODER
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC148 Datasheet(HTML) 1 Page - STMicroelectronics

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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


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