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參數(shù)資料
| 型號： | 74HC574 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal D-type flip-flop; positive edge-trigger; 3-state |
| 中文描述： | 八路D型觸發(fā)器，上升沿觸發(fā)，三態(tài) |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 57K |
| 代理商： | 74HC574 |
December 1990
2
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive
edge-trigger; 3-state
74HC/HCT574
FEATURES
3-state non-inverting outputs for
bus oriented applications
8-bit positive edge-triggered
register
Common 3-state output enable
input
Independent register and 3-state
buffer operation
Output capability: bus driver
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT574 are high-speed
Si-gate CMOS devices and are pin
compatible with low power Schottky
TTL (LSTTL). They are specified in
compliance with JEDEC standard
no. 7A.
The 74HC/HCT574 are octal D-type
flip-flops featuring separate D-type
inputs for each flip-flop and
non-inverting 3-state outputs for bus
oriented applications. A clock (CP)
and an output enable (OE) input are
common to all flip-flops.
The 8 flip-flops will store the state of
their individual D-inputs that meet the
set-up and hold time requirements on
the LOW-to-HIGH CP transition.
When OE is LOW, the contents of the
8 flip-flops are available at the
outputs.
When OE is HIGH, the outputs go to
the high impedance OFF-state.
Operation of the OE input does not
affect the state of the flip-flops.
The “574” is functionally identical to
the “564”, but has non-inverting
outputs.
The “574” is functionally identical to
the “374”, but has a different pinning.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
2.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL/
t
PLH
f
max
C
I
C
PD
propagation delay CP to Q
n
maximum clock frequency
input capacitance
power dissipation capacitance per flip-flop
C
L
= 15 pF; V
CC
= 5 V
14
123
3.5
22
15
76
3.5
25
ns
MHz
pF
pF
notes 1 and 2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HC574A | 制造商:Motorola Inc 功能描述: |
| 74HC574AP | 制造商:Toshiba 功能描述:74HC Octal D-Type Flip-Flop(3-State) |
| 74HC574D | 功能描述:觸發(fā)器 OCTAL D F/F POS-EDGE 3STATE RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74HC574D(BJ) | 功能描述:IC D-TYPE POS TRG SNGL 20SOIC 制造商:toshiba semiconductor and storage 系列:74HC 包裝:剪切帶（CT） 零件狀態(tài):在售 功能:標(biāo)準(zhǔn) 類型:D 型 輸出類型:三態(tài)，非反相 元件數(shù):1 每元件位數(shù):8 頻率 - 時鐘:59MHz 不同 V，最大 CL 時的最大傳播延遲:33ns @ 6V，150pF 觸發(fā)器類型:正邊沿 電流 - 輸出高，低:7.8mA，7.8mA 電壓 - 電源:2 V ~ 6 V 電流 - 靜態(tài):4μA 輸入電容:5pF 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 標(biāo)準(zhǔn)包裝:1 |
| 74HC574D,652 | 功能描述:觸發(fā)器 OCTAL D F/F POS-EDGE RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
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