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What is M74HC294?

This electronic component, produced by the manufacturer "ST Microelectronics", performs the same function as "PROGRAMMABLE DIVIDER/TIMER".


M74HC294 Datasheet PDF - ST Microelectronics

Part Number M74HC294
Description PROGRAMMABLE DIVIDER/TIMER
Manufacturers ST Microelectronics 
Logo ST Microelectronics Logo 


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M54/74HC292/7292
M54/74HC294/7294
PROGRAMMABLE DIVIDER/TIMER
. HIGH SPEED
fMAX = 70 MHz (TYP.) at VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 mA (MAX.) at TA = 25 oC
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
| IOH|= IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE WITH
54/74LS292/294
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
DESCRIPTION
The 54/74HC292/7292 and HC294/7294 are high
speed CMOS PROGRAMMABLE DIVIDER/TIMER
fabricated with silicon C2MOS technology.
They achieve the high speed operation similar to
equivalent LSTTL while maintaining the CMOS low
power dissipation.
These devices are programmable frequency
dividers. The types have two clock inputs, either one
may be used for clock gating. (see the function
table). The HC292/7292 can divide from 22 to 231,
and the HC294/7294 can divide from 22 to 215. The
types feature an active-low clear input to initialize
the state of all flip-flops. To facilitate incoming
inspection, test points are provided. (TP1, TP2 and
TP3 on the HC292/7292 and TP on the
HC294/7294). All inputs are equipped with
protection circuits against static discharge and
transient excess voltage.
HC292/294 have Q output with ”Totem pole”
configuration and test point TP with ”Open Drain”
output configuration.
HC7292/7294 have all outputs ”Totem Pole”.
PIN CONNECTION (top view)
HC292
HC7292
HC294
HC7294
HC292
HC7292
HC294
HC7294
October 1993
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M74HC294 equivalent
M54/M74HC292/7292/294/7294
FUNCTION TABLE (HC292/7292)
PROGRAMMING
INPUTS
EDCBA
LLLLL
LL LLH
LL LHL
L L LHH
LLHL L
L LHLH
L L HH L
L L HHH
LHLL L
LHL LH
LHLHL
LH LHH
LHHL L
LHHLH
LHHH L
HHHHH
HL LL L
HL LLH
HL LHL
HL LHH
HLHL L
HLHLH
HL HH L
HL HHH
HH L L L
HH L LH
HH LH L
HH LHH
HHHL L
HHH L H
HHHH L
HHHHH
Q
BINARY DECIMAL
Inhibit
Inhibit
Inhibit
Inhibit
22 4
23 8
24 16
25 32
26 64
27 128
28 256
29 512
210 1,024
211 2,048
212 4,096
213 8,192
214 16,384
215 32,768
216 65,536
217 131,072
218 262,144
219 524,288
220 1,048,576
221 2,097,152
222 4,194,304
223 8,388,608
224 16,777,216
225 33,554,432
226 67,108,864
227 134,217,728
228 268,435,456
229 536,870,912
230 1,073,741,824
231 2,147,483,648
FREQUENCY DIVISION
TP1 TP2
BINARY DECIMAL BINARY DECIMAL
Inhibit
Inhibit Inhibit
Inhibit
Inhibit
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
29
Disabled Low
Disabled Low
23
23
25
25
27
27
29
29
Inhibit
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
8
8
32
32
128
128
512
512
Inhibit
217
217
217
217
217
217
217
217
217
217
217
217
Inhibit
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
Disabled Low
Disabled Low
23 8
23 8
25 32
25 32
27 128
27 128
29 512
29 512
211 2,048
211 2,048
213 8,192
213 8,192
215 32,768
215 32,768
217 131,072
217 131,072
TP3
BINARY DECIMAL
Inhibit
Inhibit
Inhibit
224
224
224
224
224
224
22
22
24
24
26
26
28
28
210
210
212
212
214
214
216
216
218
218
220
220
222
222
224
224
Inhibit
16,777,216
16,777,216
16,777,216
16,777,216
16,777,216
16,777,216
4
4
16
16
64
64
256
256
1,024
1,024
4,096
4,096
16,384
16,384
65,536
65,536
262,144
262,144
1,048,576
1,048,576
4,194,304
4,194,304
16,777,216
16,777,216
5/14


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