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Toshiba Electronic Components Datasheet

TC74VHC393FK Datasheet

Dual Binary Counter

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TC74VHC393F/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC393F,TC74VHC393FT,TC74VHC393FK
Dual Binary Counter
The TC74VHC393 is an advanced high speed CMOS 4-BIT
BINARY COUNTER fabricated with silicon gate C2MOS
technology.
It achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
It contains two independent counter circuits in one package, so
that counting or frequency division of eight binary bits can be
achieved with one IC.
This device changes state on the negative going transition of
the CLOCK pulse. The counter can be reset to “0” (QA to QD =
“L”) by a high at the CLEAR input regardless of other inputs.
An input protection circuit ensures that 0 to 5.5 V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Features
High speed: fmax = 170 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)
Power down protection is provided on all inputs.
Balanced propagation delays: tpLH ∼− tpHL
Wide operating voltage range: VCC (opr) = 2 to 5.5 V
Low noise: VOLP = 0.8 V (max)
Pin and function compatible with 74ALS393
TC74VHC393F
TC74VHC393FT
TC74VHC393FK
Weight
SOP14-P-300-1.27A
TSSOP14-P-0044-0.65A
VSSOP14-P-0030-0.50
: 0.18 g (typ.)
: 0.06 g (typ.)
: 0.02 g (typ.)
1 2012-02-29


Toshiba Electronic Components Datasheet

TC74VHC393FK Datasheet

Dual Binary Counter

No Preview Available !

Pin Assignment
1CK 1
1CLR 2
1QA 3
1QB 4
1QC 5
1QD 6
GND 7
(top view)
14 VCC
13 2CK
12 2CLR
11 2QA
10 2QB
9 2QC
8 2QD
Truth Table
Inputs
CK CLR
XH
L
L
QA
L
Outputs
QB QC
LL
Count Up
No Change
QD
L
X: Don’t care
System Diagram
TC74VHC393F/FT/FK
IEC Logic Symbol
1CLR (2)
1CK (1)
2CLR (12)
2CK (13)
CTRDIV 16
CT = 0
0
CT
+3
(3) 1QA
(4) 1QB
(5) 1QC
(6) 1QD
(11) 2QA
(10) 2QB
(9) 2QC
(8) 2QD
1/13
CK
2/12
CLR
D
CK Q
R
D
CK Q
R
D
CK Q
R
D
CK Q
R
3/11
QA
4/10
QB
5/9
QC
6/8
QD
2 2012-02-29


Part Number TC74VHC393FK
Description Dual Binary Counter
Maker Toshiba
Total Page 10 Pages
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