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HD74ALVCH162260 の電気的特性と機能

HD74ALVCH162260のメーカーはHitachi Semiconductorです、この部品の機能は「12-bit to 24-bit Multiplexed D-type Latches with 3-state Outputs」です。


製品の詳細 ( Datasheet PDF )

部品番号 HD74ALVCH162260
部品説明 12-bit to 24-bit Multiplexed D-type Latches with 3-state Outputs
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 




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HD74ALVCH162260 Datasheet, HD74ALVCH162260 PDF,ピン配置, 機能
HD74ALVCH162260
12-bit to 24-bit Multiplexed D-type Latches with 3-state Outputs
ADE-205-177B (Z)
3rd. Edition
December 1999
Description
The HD74ALVCH162260 is a 12-bit to 24-bit multiplexed D-type latch used in applications where two
separate data paths must be multiplexed onto, or demultiplexed from, a single data path. Typical
applications include multiplexing and / or demultiplexing of address and data information in
microprocessor or bus interface applications. This device is also useful in memory interleaving
applications. Three 12-bit I / O ports (A1-A12, 1B1-1B12, and 2B1-2B12) are available for address and /
or data transfer. The output enable (OE1B, OE2B, and OEA) inputs control the bus transceiver functions.
The OE1B and OE2B control signals also allow bank control in the A-to-B direction. Address and / or data
information can be stored using the internal storage latches. The latch enable (LE1B, LE2B, LEA1B, and
LEA2B) inputs are used to control data storage. When the latch enable input is high, the latch is
transparent. When the latch enable input goes low, the data present at the inputs is latched and remains
latched until the latch enable input is returned high. Active bus hold circuitry is provided to hold unused or
floating data inputs at a valid logic level. The B 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
B-port outputs have equivalent 26 series resistors, so no external resistors are required.

1 Page





HD74ALVCH162260 pdf, ピン配列
Pin Arrangement
HD74ALVCH162260
OEA 1
LE1B 2
2B3 3
GND 4
2B2 5
2B1 6
VCC 7
A1 8
A2 9
A3 10
GND 11
A4 12
A5 13
A6 14
A7 15
A8 16
A9 17
GND 18
A10 19
A11 20
A12 21
VCC 22
1B1 23
1B2 24
GND 25
1B3 26
LE2B 27
SEL 28
(Top view)
56 OE2B
55 LEA2B
54 2B4
53 GND
52 2B5
51 2B6
50 VCC
49 2B7
48 2B8
47 2B9
46 GND
45 2B10
44 2B11
43 2B12
42 1B12
41 1B11
40 1B10
39 GND
38 1B9
37 1B8
36 1B7
35 VCC
34 1B6
33 1B5
32 GND
31 1B4
30 LEA1B
29 OE1B
3


3Pages


HD74ALVCH162260 電子部品, 半導体
HD74ALVCH162260
Logic Diagram
LE1B
LE2B
LEA1B
LEA2B
2
27
30
55
OE2B 56
OE1B 29
OEA 1
28
SEL
8
A1
G1
1
1
C1
1D
C1
1D
C1
1D
C1
1D
To eleven other channels
23
1B1
6
2B1
6

6 Page



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部品番号部品説明メーカ
HD74ALVCH162260

12-bit to 24-bit Multiplexed D-type Latches with 3-state Outputs

Hitachi Semiconductor
Hitachi Semiconductor


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