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參數資料
| 型號： | M74HC4518B1R |
| 廠商： | 意法半導體 |
| 元件分類： | 通用總線功能 |
| 英文描述： | HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER |
| 中文描述： | HC4518雙十進制計數器HC4520雙4位二進制計數器 |
| 文件頁數： | 1/13頁 |
| 文件大?。?/td> | 270K |
| 代理商： | M74HC4518B1R |
M54/M74HC4518
M54/M74HC4520
March 1993
HC4520 DUAL 4 BIT BINARY COUNTER
HC4518 DUAL DECADE COUNTER
B1R
(Plastic Package)
ORDER CODES :
M54HCXXXXF1R
M74HCXXXXB1R
M74HCXXXXM1R
M74HCXXXXC1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTIONS
(top view)
NC =
No Internal
Connection
DESCRIPTION
The M54/74HC4518/4520 are high speed CMOS
DUAL 4 BIT BINARY COUNTERS fabricated in sili-
con gate C
2
MOS technology. Theyhave the same
high speed performance of LSTTL combined with
true CMOS low power consumption.
They consists of two identical internally syn-
chronous 4-stage counters. The counter stages are
D-type flip-flops having interchangeable Clock and
ENABLE inputs for incrementing on either theposi-
tive-going or negative-going transition.
Forsingle-unit operation theENABLE input ismain-
tained ”high” and the counter advances on each
positive-going
transition of the CLOCK. The
counters are cleared by high levels on their clear
lines. The counter can be cascaded in the ripple
mode by connecting Q4 to the enable input of the
subsequentcounterwhiletheclockinput ofthelatter
is heldpermanently low.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
.
HIGH SPEED
f
MAX
= 55 MHz (TYP.) at V
CC
= 5 V
.
LOWPOWER DISSIPATION
I
CC
= 4
μ
A(MAX.) AT T
A
= 25
°
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 4 mA (MIN.)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
PIN AND FUNCTION COMPATIBLE WITH
4520B/4518B
1/13
相關PDF資料 |
PDF描述 |
|---|---|
| M74HC4518C1R | 12-Bit DAC, Parallel, Voltage Out, Programmable Int. Ref., Settling Time, Pwr Consumption, 1 Ch. 20-SOIC 0 to 70 |
| M74HC4518F1R | HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER |
| M74HC4538 | DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M74HC4538B1R | DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M74HC4538C1R | 12-Bit DAC, Parallel, Voltage Out, Programmable Int. Ref., Settling Time, Pwr Consumption, 1 Ch. 20-TSSOP 0 to 70 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M74HC4518C1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER |
| M74HC4518F1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER |
| M74HC4518M1R | 制造商:STMicroelectronics 功能描述:COUNTER DUAL 4BIT DECADE UP 16SOP - Rail/Tube |
| M74HC4518RM13TR | 功能描述:計數器移位寄存器 Dual Decade Counter RoHS:否 制造商:Texas Instruments 計數器類型: 計數順序:Serial to Serial/Parallel 電路數量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| M74HC4518TTR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL DECADE COUNTER |
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