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M74HC393 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M74HC393
Description  DUAL BINARY COUNTER
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M74HC393 Datasheet(HTML) 1 Page - STMicroelectronics

 
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July 2001
s
HIGH SPEED :
fMAX = 79 MHz (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 393
DESCRIPTION
The M74HC393 is an high speed CMOS DUAL
BINARY COUNTER fabricated with silicon gate
C2MOS technology.
This counter circuit contains independent ripple
carry counters and two 4-bit ripple carry binary
counters, which can be cascaded to create a
single divide by 256 counter.
Each 4-bit counter is incremented on the high to
low transition (negative edge) of the clock input,
and each has an independent clear input. When
CLEAR is set to low, all four bits of each counter
are set to a low level. This enables count
truncation and allows the implementation of divide
by N counter configurations.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC393
DUAL BINARY COUNTER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
M74HC393B1R
SOP
M74HC393M1R
M74HC393RM13TR
TSSOP
M74HC393TTR
TSSOP
DIP
SOP


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