Texas Instruments CD74HCT390E Bedienungsanleitung
Seiten 22 Englisch Nicht kategorisiert
Lies die Bedienungsanleitung für Texas Instruments CD74HCT390E kostenlos online oder lade das PDF herunter. Diese Anleitung wurde 19 Mal aufgerufen. Frage zu diesem Modell? Stelle eine Frage
CD74HC390, CDx4HCT390 High-Speed CMOS Logic Dual Decade Ripple Counter
1 Features
•Two BCD decade or bi-quinary counters
•One package can be configured to divide-by-2, 4,
5, 10, 20, 25, 50, 100
•Two controller reset inputs to clear each decade
counter individually
•Fanout (over temperature range)
–Standard outputs: 10 LSTTL loads
–Bus driver outputs: 15 LSTTL loads
•Wide operating temperature range: -55°C to 125°C
•Balanced propagation delay and transition times
•Significant power reduction compared to LSTTL
logic ICs
•HC types
–2V to 6V operation
–High noise immunity: NIL = 30%, NIH = 30% of
VCC at VCC = 5V
•HCT types
–4.5 V to 5.5 V operation
–Direct LSTTL input logic compatibility, VIL = 0.8
V (max), VIH = 2 V (min)
–CMOS input compatibility, II ≤ 1 μA at VOL, VOH
2 Description
The SN74HC390 and ‘HCT390 devices include two
independent 4-bit decade ripple counters, falling-edge
clocked with asynchronous clear. Each counter is
divided into two sections, a divide-by-2 and divide-
by-5 counter, each of which has an independent clock
input. This allows for very flexible configuration of the
device.
Device Information
PART NUMBERPACKAGE(1) BODY SIZE (NOM)
CD54HCT390F3ACDIP (16)24.38 mm × 6.92 mm
CD74HC390MSOIC (16)9.90 mm × 3.90 mm
CD74HCT390MSOIC (16)9.90 mm × 3.90 mm
CD74HC390EPDIP (16)19.31 mm × 6.35 mm
CD74HCT390EPDIP (16)19.31 mm × 6.35 mm
(1)For all available packages, see the orderable addendum at
the end of the data sheet.
nCLKA
nCLR
2QA2QB2QC2QD
RR R
QQ
Q
Q
R
VCC = 16
GND = 8
nCLKB
Functional Block Diagram
CD74HC390, CD54HCT390, CD74HCT390
SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Produktspezifikationen
| Marke: | Texas Instruments |
| Kategorie: | Nicht kategorisiert |
| Modell: | CD74HCT390E |
Brauchst du Hilfe?
Wenn Sie Hilfe mit Texas Instruments CD74HCT390E benötigen, stellen Sie unten eine Frage und andere Benutzer werden Ihnen antworten