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参数资料
| 型号： | 74AHCT574 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Octal D-type flip-flop; positive edge-trigger; 3-state(八D触发器；上升沿触发；三态) |
| 中文描述： | 八路D型触发器，上升沿触发，三态（八?触发器，上升沿触发，三态） |
| 文件页数： | 2/20页 |
| 文件大小： | 91K |
| 代理商： | 74AHCT574 |
1999 Jun 16
2
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger; 3-state
74AHC574;
74AHCT574
FEATURES
3-state non-inverting outputs for
bus oriented applications
8-bit positive, edge-triggered
register
ESD protection:
HBM EIA/JESD22-A114-A
exceeds 2000 V
MM EIA/JESD22-A115-A
exceeds 200 V
Independent register and 3-state
buffer operation
Common 3-state output enable
input
Output capability; bus driver
I
CC
category: MSI
For AHC only:
operates with CMOS input levels
For AHCT only:
operates with TTL input levels
Specified from
40 to +85 and +125
°
C.
DESCRIPTION
The 74AHC/AHCT574 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 74AHC/AHCT574 are octal D-type flip-flops featuring separate D-type
inputs for each flip-flop and 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 times 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
≤
3.0 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 Volts.
The condition is V
I
= GND to V
CC
.
2.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
AHC
AHCT
t
PHL
/t
PLH
propagation delay
CP to Q
n
maximum clock frequency
input capacitance
output capacitance
power dissipation
capacitance
C
L
= 15 pF; V
CC
= 5 V
4.4
4.4
ns
f
max
C
I
C
O
C
PD
C
L
= 15 pF; V
CC
= 5 V
V
I
= V
CC
or GND
130
4.0
4.0
10
130
4.0
4.0
12
MHz
pF
pF
pF
C
L
= 50 pF; f = 1 MHz;
notes 1 and 2
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| 74AHCT595 | 8-bit serial-in/serial or parallel-out shift register with output latches;3-state(带输出锁存的8位串行输入/串行或并行输出移位寄存器；三态) |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 74AHCT574BQ | 制造商:NXP Semiconductors 功能描述:IC OCTAL D F-F POS EDGE 20DH |
| 74AHCT574BQ,115 | 功能描述:触发器 OCTAL D-TYPE RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
| 74AHCT574BQ-G | 功能描述:触发器 OCTAL D-TYPE RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
| 74AHCT574D | 功能描述:触发器 OCTAL D-TYPE RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
| 74AHCT574D,112 | 功能描述:触发器 OCTAL D-TYPE RoHS:否 制造商:Texas Instruments 电路数量:2 逻辑系列:SN74 逻辑类型:D-Type Flip-Flop 极性:Inverting, Non-Inverting 输入类型:CMOS 输出类型: 传播延迟时间:4.4 ns 高电平输出电流:- 16 mA 低电平输出电流:16 mA 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:X2SON-8 封装:Reel |
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