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PDF HD74BC563A Data sheet ( Hoja de datos )
| Número de pieza | HD74BC563A | |
| Descripción | Octal D Type Transparent Latches With 3 State Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74BC563A
Octal D Type Transparent Latches With 3 State Outputs
ADE-205-040 (Z)
Rev. 0
June 1993
Description
HD74BC563A provides high drivability and operation equal to or better than high speed bipolar standard
logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high
speed bipolar logic IC, when the frequency is 10 MHz. The device has eight D type latches with three state
outputs in a 20 pin package. When the latch enable input is high, the Q outputs will follow the D inputs.
When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enable
returns high again. When a high logic level is applied to the output control input, all outputs go to a high
impedance state, regardless of what signals are present at the other inputs and the state of the storage
elements.
Features
• Input/Output are at high impedance state when power supply is off.
• Built in input pull up circuit can make input pins be open, when not used.
• TTL level input
• Wide operating temperature range
Ta = –40 to +85°C.
Function Table
Output Control
Latch Enable
Data
Output Q
LH H L
LH
L
H
L L X Q0
HX X Z
H : High level
L : Low level
X : Immaterial
Z : High impedance
Q0 : Level of Q before the indicated steady state input conditions were established.
1 page  
Switching Test Method (CL = 50 pF)
Item
Propagation
delay time
D→Q
LE → Q
Output enable time
Output disable time
Setup time
Hold time
Pulse width
Input capacitance
Output capacitance
Symbol
t PLH
t PHL
t PLH
t PHL
t ZH
t ZL
t HZ
t LZ
tS(H)
tS(L)
th(H)
th(L)
tw
CIN
CO
Ta = 25°C
VCC = 5.0 V
Min Max
3.0 8.0
3.0 8.0
3.0 8.0
3.0 8.0
3.0 9.0
3.0 9.0
3.0 8.0
3.0 8.0
2.0 —
2.0 —
2.0 —
2.0 —
6.0 —
3.0(Typ)
15.0(Typ)
HD74BC563A
Ta = –40 to 85°C
VCC = 5.0 V ±10%
Min Max
3.0 10.0
3.0 10.0
3.0 10.0
3.0 10.0
3.0 11.0
3.0 11.0
3.0 10.0
3.0 10.0
2.0 —
2.0 —
2.0 —
2.0 —
6.0 —
—
—
Unit Test Conditions
ns See under figure
ns
ns
ns
ns
ns
ns
pF VIN = VCC or GND
pF VO = VCC or GND
Test Circuit
VCC
Input
Pulse Generator
Zout = 50 Ω
Input
Pulse Generator
Zout = 50 Ω
VCC
OC
Output
1D to 8D
1Q to 8Q
CL=
LE 50 pF
500 Ω
450 Ω
50 Ω Scope
Notes:
1. CL includes probe and jig capacitance.
2. OPEN: tPLH, tPHL, tZH, tHZ, th, ts, tw
7V: tZL, tLZ
*2
OPEN
7V
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HD74BC563A.PDF ] | |
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