参数资料
型号: 74ALVT16821
厂商: NXP Semiconductors N.V.
英文描述: Hex Schmitt-Trigger Inverters 14-PDIP -40 to 85
中文描述: 20位总线接口D型触发器;积极边缘触发三态
文件页数: 4/13页
文件大小: 94K
代理商: 74ALVT16821
Philips Semiconductors
Product specification
74ALVT16821
2.5V/3.3V 20-bit bus-interface D-type flip-flop;
positive-edge trigger (3-State)
1998 Feb 13
4
PIN DESCRIPTION
PIN NUMBER
SYMBOL
FUNCTION
56, 54, 52, 51, 49,
48, 47, 45, 44, 43,
42, 41, 40, 38, 37,
36, 34, 33, 31, 30
1D0 - 1D9
2D0 - 2D9
Data inputs
2, 3, 5, 6, 8, 9, 10,
12, 13, 14,
15, 16, 17, 19, 20,
21, 23, 24, 26, 27
1Q0 - 1Q9
2Q0 - 2Q9
Data outputs
1, 28
1OE, 2OE
Output enable inputs
(active-Low)
56, 29
1CP, 2CP
Clock pulse inputs
(active rising edge)
4, 11, 18, 25, 32,
39, 46, 53
GND
Ground (0V)
7, 22, 35, 50
V
CC
Positive supply
voltage
FUNCTION TABLE
INPUTS
INTERNAL
REGISTER
OUTPUTS
OPERATING
MODE
nOE
nCP
nDx
nQ0 - nQ9
L
L
l
h
L
H
L
H
Load and read
register
L
X
NC
NC
Hold
H
H
X
Dn
NC
Dn
Z
Z
Disable
outputs
H =
h
High voltage level
High voltage level one set-up time prior to the Low-to-High
clock transition
Low voltage level
Low voltage level one set-up time prior to the Low-to-High
clock transition
No change
Don’t care
High impedance “off” state
Low to High clock transition
Not a Low-to-High clock transition
=
L
l
=
=
NC=
X =
Z =
=
=
LOGIC DIAGRAM
CP Q
D
nD0
nQ0
nCP
nOE
CP Q
D
nD1
nQ1
CP Q
D
nD2
nQ2
CP Q
D
nD3
nQ3
CP Q
D
nD4
nQ4
CP Q
D
nD5
nQ5
CP Q
D
nD6
nQ6
CP Q
D
nD7
nQ7
CP Q
D
nD8
nQ8
CP Q
D
nD9
nQ9
SH00004
相关PDF资料
PDF描述
74ALVT16823 18-bit bus-interface D-type flip-flop with reset and enable (3-State)(带复位和使能的18位总线接口D触发器(三态))
74ALVT16827 2.5V/3.3V ALVT 20-bit buffer/line driver,non-inverting (3-State)(同相(三态),2.5V/3.3V ALVT 20位缓冲器/线驱动器)
74ALVT16841DGG Hex Schmitt-Trigger Inverters 14-TSSOP -40 to 85
74ALVT16841 2.5V/3.3V ALVT 20-bit bus interface latch(3-State)(2.5V/3.3V ALVT 20位总线接口锁存器(三态))
74ALVT16841DL 2.5V/3.3V ALVT 20-bit bus interface latch 3-State
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74ALVT16821DGG 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:20-bit bus-interface D-type flip-flop; positive-edge trigger 3-State
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