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參數(shù)資料
| 型號： | SN54HCT574 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Positive-Edge-Triggered D-Type Flip-Flops(八上升沿D觸發(fā)器(三態(tài)同相輸出)) |
| 中文描述： | 八路上升沿觸發(fā)D型正反器（八上升沿?觸發(fā)器（三態(tài)同相輸出）） |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 156K |
| 代理商： | SN54HCT574 |
SN54HCT574, SN74HCT574
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS177B – MARCH 1984 – REVISED JULY 1996
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Inputs Are TTL-Voltage Compatible
High-Current 3-State Noninverting Outputs
Drive Bus Lines Directly or up to 15 LSTTL
Loads
Bus-Structured Pinout
Package Options Include Plastic
Small-Outline (DW), Thin Shrink
Small-Outline (PW), and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
These octal edge-triggered D-type flip-flops
feature 3-state outputs designed specifically for
bus driving. They are particularly suitable for
implementing
buffer
bidirectional bus drivers, and working registers.
registers,
I/O
ports,
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low logic levels) or the
high-impedance state. In the high-impedance
state, the outputs neither load nor drive the bus
lines significantly. The high-impedance state and
increased drive provide the capability to drive bus
lines without interface or pullup components.
OE does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
The SN54HCT574 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C. The
SN74HCT574 is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
(each flip-flop)
INPUTS
CLK
↑
↑
H or L
OUTPUT
Q
OE
D
L
H
H
L
L
L
L
X
Q0
Z
H
X
X
Copyright
1996, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2Q
3Q
4Q
5Q
6Q
3D
4D
5D
6D
7D
2
1
O
8
7
V
1
8
G
C
SN54HCT574 . . . FK PACKAGE
(TOP VIEW)
SN54HCT574 . . . J OR W PACKAGE
SN74HCT574 . . . DW, N, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1D
2D
3D
4D
5D
6D
7D
8D
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
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| SN54HCU04J | 制造商:Texas Instruments 功能描述:HEX INVERTER - Rail/Tube 制造商:Texas Instruments 功能描述:Inverter 6-Element CMOS 14-Pin CDIP Tube |
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| SN54L46J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN54L51J | 制造商:Texas Instruments 功能描述: |
| SN54L74T | 制造商:Texas Instruments 功能描述:Flip Flop, Dual, D Type, 14 Pin, Metal, Flat Pack |
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