M74HC294RM13TR ,PROGRAMMABLE DIVIDER/TIMERlogic diagram has not be used to estimate propagation delays3/11M74HC294FUNCTIONAL TABLE FREQUENC ..
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M74HC294RM13TR
PROGRAMMABLE DIVIDER/TIMER
1/11August 2001 HIGH SPEED :
fMAX = 75 MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION:
ICC =4μA(MAX.) at TA=25°C HIGH NOISE IMMUNITY:NIH = VNIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:OH | = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 294
DESCRIPTIONThe M74HC294 is an high speed CMOS
PROGRAMMABLE DIVIDER/TIMER fabricated
with silicon gate C2 MOS technology.
This device is a programmable frequency divider
and has two clock inputs, either one may be used
for clock gating. (see the function table).
The M74HC294 can divide from 22 to 215 . This
device feature an active-low clear input to initialize
the state of all flip-flops. To facilitate incoming
inspection, test points (TP) are provided. All
inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
This device has Q output with "Totem Pole"
configuration and test point TP with "Open Drain"
output configuration.
M74HC294PROGRAMMABLE DIVIDER/TIMER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
M74HC2942/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT (TOTEM POLE OUTPUT)
INPUT AND OUTPUT EQUIVALENT CIRCUIT (OPEN DRAIN OUTPUT)
PIN DESCRIPTION
TRUTH TABLE
M74HC2943/11
LOGIC DIAGRAM This logic diagram has not be used to estimate propagation delays
M74HC2944/11
FUNCTIONAL TABLE
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
M74HC2945/11
RECOMMENDED OPERATING CONDITIONS
DC SPECIFICATIONS
M74HC2946/11
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
CAPACITIVE CHARACTERISTICS 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC
