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Part: M74HC294B1R
Category:
Logic
-> HC/HCT->High Speed CMOS
Description: Programmable Divider/timer
Company: ST Microelectronics, Inc.
Datasheet: Download M74HC294B1R datasheet File size : 53 kB
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Datasheet text preview:
M74HC294
PROGRAMMABLE DIVIDER/TIMER
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H IGH SPEED : fMAX = 75 MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C H IGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL W IDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 294
DIP
SOP
TSSOP
ORDER CODES
PACKAGE DIP SOP TSSOP TUBE M74HC294B1R M74HC294M1R T&R M74HC294RM13TR M74HC294TTR
DESCRIPTION The M74HC294 is an high speed CMOS PROGRAMMABLE DIVIDER/TIMER fabricated with silicon gate C2MOS 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.
PIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
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M74HC294
INPUT AND OUTPUT EQUIVALENT CIRCUIT (TOTEM POLE OUTPUT) INPUT AND OUTPUT EQUIVALENT CIRCUIT (OPEN DRAIN OUTPUT)
PIN DESCRIPTION
PIN No 4, 5 1, 2, 14, 15 3 11 7 8 16 SYMBOL CLK1, CLK2 A to E TP CLR Q GND Vcc NAME AND FUNCTION Input Clock Program Inputs Test Point Outputs Clear (Active LOW) Output Ground (0V) Positive Supply Voltage
TRUTH TABLE
CLR L H H H H L H X X H NO CHANGE CLK1 X CLK2 X L Q OUTPUT MODE CLEARED TO L UP COUNT
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M74HC294
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
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Others parts begin by m7
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