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PDF HD74BC534A Data sheet ( Hoja de datos )
| Número de pieza | HD74BC534A | |
| Descripción | Octal D Type Flip Flops With 3 State Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74BC534A
Octal D Type Flip Flops With 3 State Outputs
ADE-205-012 (Z)
Rev. 0
June 1993
Description
The HD74BC534A 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 edge triger D type flip
flop with three state outputs in a 20 pin package. Data at the D inputs meeting set up reguirements, are
transferred to the Q outputs on positive going transitions of the clock input. 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 strage 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
Inputs
G CK
HX
L
L
LL
H : High level
L : Low level
X : Immaterial
Z : High impedance
: Low to high transitions
D
X
L
H
X
Output Q
Z
H
L
No change
1 page  
Switching Test Method (CL = 50 pF)
Item
Symbol
Propagation
CK → Q tPLH
delay time
t PHL
Output enable time
t ZH
t ZL
Output disable time
t HZ
t LZ
Setup time
ts(H)
ts(L)
Hold time
th(H)
th(L)
Pulse width
tw(H)
tw(L)
Input capacitance
CIN
Output capacitance
CO
Ta = 25°C
VCC = 5.0 V
Min Max
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 —
6.0 —
3.0(Typ)
15.0(Typ)
HD74BC534A
Ta = –40 to 85°C
VCC = 5.0 V ±10%
Min Max
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 —
6.0 —
—
—
Unit Test Conditions
ns See under figure
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
Output
G
1Q to 8Q
1D to 8D
CL =
50 pF
450 Ω
50 Ω Scope
CK
Notes:
1. CL includes probe and jig capacitance.
2. OPEN: tPLH, tPHL, tZH, tHZ, th, ts, tw
7V: tZL, tLZ
OPEN
7V *2
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HD74BC534A.PDF ] | |
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