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PDF HD74ALVCH162373 Data sheet ( Hoja de datos )
| Número de pieza | HD74ALVCH162373 | |
| Descripción | 16-bit Transparent D-type Latches with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74ALVCH162373
16-bit Transparent D-type Latches with 3-state Outputs
ADE-205-179 (Z)
Preliminary
1st. Edition
December 1996
Description
The HD74ALVCH162373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers. It can be used as two 8-bit latches or one 16-bit latch. When the latch
enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs
are latched at the levels set up at the D inputs. 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
Ω 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 Ω series resistors, so no external resistors are required.
1 page  
Logic Diagram
1OE 1
1LE 48
47
1D1
C1
1D
HD74ALVCH162373
2
1Q1
To seven other channels
2OE 24
2LE 25
36
2D1
C1
1D
13
2Q1
To seven other channels
5
5 Page 
Package Dimensions
12.50
+0.3
–0.1
48
25
HD74ALVCH162373
Unit : mm
1
0.20
+0.1
–0.05
24
0.50
0.08 M
0.65 Max
0.10
8.10 ± 0.3
10° Max
0.50 ± 0.1
Hitachi Code
JEDEC Code
EIAJ Code
TTP-48DC
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11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet HD74ALVCH162373.PDF ] | |
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