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74HC690のメーカーはSTMicroelectronicsです、この部品の機能は「(74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE」です。 |
部品番号 | 74HC690 |
| |
部品説明 | (74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE | ||
メーカ | STMicroelectronics | ||
ロゴ | |||
このページの下部にプレビューと74HC690ダウンロード(pdfファイル)リンクがあります。 Total 23 pages
M54/74HC690/691
M54/74HC692/693
HC690/692 DECADE COUNTER/REGISTER (3-STATE)
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE)
. HIGH SPEED
fMAX = 50 MHz (TYP.) at VCC = 5 V
. LOW POWER DISSIPATION
www.DataSheet4U.coImCC = 4 µA (MAX.) at TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
. 15 LSTTL LOADS (for QA to QD)
10 LSTTL LOADS (for RCO)
SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 6 mA (MIN.) (for QA to QD)
IOH = IOL = 4 mA (MIN.) (for RCO)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V to 6 V
. PIN AND FUNCTION COMPATIBLE
WITH LSTTL 54/74LS690/691
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
DESCRIPTION
The HC690/691/692/693 are high speed CMOS
COUNTER/REGISTER fabricated in silicon gate
C2MOS technology.
They have the same high speed performance of
LSTTL combined with true CMOS low power con-
sumption.
The internal circuit is composed of 3 stages includ-
ing buffer output, which offers high noise immunity
and stable output. These devices incorporate a syn-
chronous counter, four-bit D-type register, and
quadruple two-line to one-line multiplexers with
three-state outputs in a single 20-pin package. The
counter can be programmed from the data inputs
and have enable P and enable T inputs and a ripple-
carry output for easy expansion. The regis-
ter/counter select input, R/C, selects the counter
when low or the register when high for the three-
state outputs, QA, QB, QC, and QD.
If the LOAD input (LOAD) is held ”L” DATA input (A-
D) are loaded in to the internal counter at positive
edge of counter clock input (CCK). In the counter
mode, internal counter counts up at the positive of
the counter clock. If the counter clear input (CCLR)
is held ”L”, the internal counter is cleared ( synchron-
ously to the counter clock for HC692/HC693, and
asynchronously for HC690/HC691). The internal
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
March 1993
1/23
1 Page M54/M74HC690/691/692/693
TRUTH TABLE
INPUTS
OUTPUS
CCLR LOAD ENP ENT CCK RCLR RCK R/C G QA QB QC QD
FUNCTION
X X X X X X X X X Z Z Z Z HIGH IMPEDANCE
L X X X (*) X X L L L L L L CLEAR COUNTER
HLXX
X X L L a b c d LOAD COUNTER
HHL X
X X LL
NO CHANGE
NO COUNT
HHX L
X X LL
NO CHANGE
NO COUNT
HHHH
X X LL
COUNT UP
COUNT UP
www.DataSheet4U.coHm
X
X
X
X X LL
NO CHANGE
NO COUNT
X X X X X L (*) H L L L L L CLEAR REGISTER
X X X XXH
H L a’ b’ c’ d’ LOAD REGISTER
X X X XXH
HL
NO CHANGE
NO LOAD
(*) : X for HC690/691
for HC692/693
X : DON’T CARE
Z : HIGH IMPEDANCE
a-d : THE LEVEL OF STEADY STATE INPUTS AT INPUTS A THROUGHT D RESPECTIVELY.
a’-d’ : THE LEVEL OF STEADY STATE OUTPUTS AT INTERNAL COUNTER OUTPUTS a’ through qd’ respectively
HC690/692 RCO = QA • QD • ENT
HC691/693 RCO = QA • QB • QC • QD • ENT
BLOCK DIAGRAM
3/23
3Pages M54/M74HC690/691/692/693
LOGIC DIAGRAM (HC691)
www.DataSheet4U.com
6/23
6 Page | |||
ページ | 合計 : 23 ページ | ||
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PDF ダウンロード | [ 74HC690 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
74HC690 | (74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE | STMicroelectronics |
74HC691 | (74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE | STMicroelectronics |
74HC692 | (74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE | STMicroelectronics |
74HC693 | (74HC690 - 74HC693) 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE | STMicroelectronics |