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HD74ALVCH162374 PDF даташит

Спецификация HD74ALVCH162374 изготовлена ​​​​«Hitachi Semiconductor» и имеет функцию, называемую «16-bit Edge triggered D-type Flip Flops with 3-state Outputs».

Детали детали

Номер произв HD74ALVCH162374
Описание 16-bit Edge triggered D-type Flip Flops with 3-state Outputs
Производители Hitachi Semiconductor
логотип Hitachi Semiconductor логотип 

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HD74ALVCH162374 Даташит, Описание, Даташиты
HD74ALVCH162374
16-bit Edge triggered D-type Flip Flops with 3-state Outputs
ADE-205-180B (Z)
Preliminary
3rd. Edition
October 1997
Description
The HD74ALVCH162374 is particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers. It can be used as two 8-bit flip flops or one 16-bit flip flop. On the
positive transition of the clock (CLK) input, the Q outputs of the flip flop take on the logic levels set up at
the data (D) inputs.
The output enable (OE) input can be used to place the eight outputs in either a normal logic state (high or
low logic levels) or a high impedance state. In the high impedance state, the outputs neither load nor drive
the bus lines significantly. The high impedance state and the increased drive provide the capability to drive
bus lines without need for interface or pullup components. OE does not affect 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.
Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. All
outputs, which are designed to sink up to 12 mA, include 26 resistors to reduce overshoot and
undershoot.
Features
VCC = 2.3 V to 3.6 V
Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
High output current ±12 mA (@VCC = 3.0 V)
Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
All outputs have equivalent 26 series resistors, so no external resistors are required.









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HD74ALVCH162374 Даташит, Описание, Даташиты
HD74ALVCH162374
Function Table
Inputs
Output Q
OE
CLK
D
L H
H
L L
L
L
H or L
X
HXX
Q0 *1
Z
H : High level
L : Low level
X : Immaterial
Z : High impedance
: Low to high transition
Note: 1. Output level before the indicated steady state input conditions were established.
2









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HD74ALVCH162374 Даташит, Описание, Даташиты
Pin Arrangement
HD74ALVCH162374
1OE 1
1Q1 2
1Q2 3
GND 4
1Q3 5
1Q4 6
VCC 7
1Q5 8
1Q6 9
GND 10
1Q7 11
1Q8 12
2Q1 13
2Q2 14
GND 15
2Q3 16
2Q4 17
VCC 18
2Q5 19
2Q6 20
GND 21
2Q7 22
2Q8 23
2OE 24
(Top view)
48 1CLK
47 1D1
46 1D2
45 GND
44 1D3
43 1D4
42 VCC
41 1D5
40 1D6
39 GND
38 1D7
37 1D8
36 2D1
35 2D2
34 GND
33 2D3
32 2D4
31 VCC
30 2D5
29 2D6
28 GND
27 2D7
26 2D8
25 2CLK
3










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