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Toshiba Electronic Components Datasheet

TC74HC40103AF Datasheet

8-Bit Binary Programmable Down Counter

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TC74HC40102,40103AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC40102AP, TC74HC40102AF
TC74HC40103AP, TC74HC40103AF
TC74HC40102AP/AF Dual BCD Programmable Down Counter
TC74HC40103AP/AF 8-Bit Binary Programmable Down Counter
The TC74HC40102A and TC74HC40103A are high speed
CMOS PROGRAMMABLE DOWN COUNTERS fabricated with
silicon gate C2MOS technology.
They achieve the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
The output terminal ( CO/ZD ) goes to an active low state when
the down count reaches zero. Since the TC74HC40102A is
designed as a BCD counter, programming up to 99 counts is
possible. The TC74HC40103A, with its 8-bit binary construction,
can be set to provide up to 255 counts.
Both devices have Inhibit Clock ( CI/CE ), Asynchronous Preset
Control ( APE ), Synchronous Preset ( SPE ) and Clear Control
( CLR ) inputs for setting the counter to the maximum counting
mode.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74HC40102AP, TC74HC40103AP
TC74HC40102AF, TC74HC40103AF
Features
High speed: fmax 40 MHz (typ.) at VCC = 5 V
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
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 to 6 V
Pin and function compatible with 40102B, 40103B
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Pin Assignment
Start of commercial production
1988-11
1
2014-03-01


Toshiba Electronic Components Datasheet

TC74HC40103AF Datasheet

8-Bit Binary Programmable Down Counter

No Preview Available !

IEC Logic Symbol
TC74HC40102A
TC74HC40102,40103AP/AF
TC74HC40103A
Truth Table
CLR
H
H
H
H
L
Control Inputs
APE SPE CI/CE
H
H
H
H
H
L
H
L
X
L
X
X
X
X
X
Mode
Functional Description
Count Inhibit
Count is inhibited regardless of other inputs.
Regular Count Down count on the rising edge of CK
Synchronous Preset Input data is preset on the rising edge of CK
Asynchronous Preset Input data is asynchronously preset to CK
Clear
Counter is set to maximum count.
X: Don’t care
Maximum count: TC74HC40102A “99”, TC74HC40103A “255”
2
2014-03-01


Part Number TC74HC40103AF
Description 8-Bit Binary Programmable Down Counter
Maker Toshiba
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TC74HC40103AF Datasheet PDF






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2 TC74HC40103AP 8-Bit Binary Programmable Down Counter
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