參數(shù)資料
型號(hào)： 7ABT574APWDH
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： Octal D-type flip-flop 3-State
中文描述： ABT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝： PLASTIC, TSSOP-20
文件頁數(shù)： 2/11頁
文件大?。?/td> 50K
代理商： 7ABT574APWDH
Philips Semiconductors
Product specification
74ABT574A
Octal D-type flip-flop (3-State)
2
1995 May 22
853-1509 15261
FEATURES
74ABT574A is flow-through pinout version of 74ABT374
Inputs and outputs on opposite side of package allow easy
interface to microprocessors
3-State outputs for bus interfacing
Power-up 3-State
Power-up reset
Common output enable
Latch-up protection exceeds 500mA per Jedec Std 17
ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
Live insertion/extraction permitted.
DESCRIPTION
The 74ABT574A high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT574A is an 8-bit, edge triggered register coupled to eight
3-State output buffers. The two sections of the device are controlled
independently by the clock (CP) and Output Enable (OE) control
gates. The state of each D input (one set-up time before the
Low-to-High clock transition) is transferred to the corresponding
flip-flop’s Q output.
When OE is Low, the stored data appears at the outputs. When OE
is High, the outputs are in the High-impedance “off” state, which
means they will neither drive nor load the bus.
The 3-State output buffers are designed to drive heavily loaded
3-State buses, MOS memories, or MOS microprocessors. The
active-Low Output Enable (OE) controls all eight 3-State buffers
independent of the clock operation.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
°
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
CP to Qn
C
L
= 50pF; V
CC
= 5V
3.0
3.4
ns
C
IN
Input capacitance
V
I
= 0V or V
CC
3
pF
C
OUT
Output capacitance
Outputs disabled; V
O
= 0V or V
CC
6
pF
I
CCZ
Total supply current
Outputs disabled; V
CC
=5.5V
100
μ
A
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic DIP
–40
°
C to +85
°
C
74ABT574A N
74ABT574A N
SOT146-1
20-Pin plastic SO
–40
°
C to +85
°
C
74ABT574A D
74ABT574A D
SOT163-1
20-Pin Plastic SSOP Type II
–40
°
C to +85
°
C
74ABT574A DB
74ABT574A DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40
°
C to +85
°
C
74ABT574A PW
7ABT574APW DH
SOT360-1
PIN CONFIGURATION
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
V
CC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CP
SA00103
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1
OE
Output enable input (active-Low)
2, 3, 4, 5,
6, 7, 8, 9
D0-D7
Data inputs
19, 18, 17,
16, 15, 14,
13, 12
Q0-Q7
Data outputs
11
CP
Clock pulse input (active rising edge)
10
GND
Ground (0V)
20
V
CC
Positive supply voltage
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