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參數(shù)資料
| 型號(hào)： | 74F646 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal transceiver/register, non-inverting(3-State)(八收發(fā)器/寄存器，（同相，三態(tài)）) |
| 中文描述： | 八路收發(fā)器/寄存器，非反相（3態(tài)）（八收發(fā)器/寄存器，（同相，三態(tài)）） |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 121K |
| 代理商： | 74F646 |
Philips Semiconductors
Product specification
74F646/A/74F648/A
Transceivers/registers
1990 Sep 25
12
AC WAVEFORMS (Continued)
V
M
V
M
V
M
V
M
t
PHL
t
PLH
An or Bn
Bn or An
SBA or SAB
An or Bn
SF00396
Waveform 3. Propagation delay for An to Bn or Bn to An and
SAB or SBA to An or Bn
V
M
V
M
V
M
V
M
V
M
V
M
t
su
(L)
t
h
(L)
t
su
(H)
t
h
(H)
An or Bn
CPBA
or
CPAB
SF00397
Waveform 4. Data setup time and hold times
V
M
V
M
V
M
t
PHZ
t
PZH
OE
V
OH
-0.3V
0V
An or Bn
DIR
SF00398
Waveform 5. 3-state output enable time to high level and
output disable time from high level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
3.5V
OE
DIR
An or Bn
SF00399
Waveform 6. 3-state output enable time to low level and output
disable time from low level
NOTES:
1. For all waveforms, V
M
= 1.5V.
2. The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUIT AND WAVEFORM
t
w
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
NEGATIVE
PULSE
POSITIVE
PULSE
t
w
AMP (V)
0V
0V
t
THL (
t
f
)
INPUT PULSE REQUIREMENTS
rep. rate
t
w
t
TLH
t
THL
1MHz
500ns
2.5ns
2.5ns
Input Pulse Definition
V
CC
family
74F
D.U.T.
PULSE
GENERATOR
R
L
C
L
R
T
V
IN
V
OUT
Test Circuit for Open Collector Outputs
DEFINITIONS:
R
L
=
Load resistor;
see AC electrical characteristics for value.
Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
Termination resistance should be equal to Z
OUT
of
pulse generators.
C
L
=
R
T
=
t
THL (
t
f
)
t
TLH (
t
r
)
t
TLH (
t
r
)
AMP (V)
amplitude
3.0V
1.5V
V
M
R
L
7.0V
SF00128
TEST
t
PLZ
t
PZL
All other
SWITCH
closed
closed
open
SWITCH POSITION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F646A | Octal transceiver/register, inverting(3-State)(八收發(fā)器/寄存器，（反相，三態(tài)）) |
| 74F648 | Octal transceiver/register, inverting(3-State)(八通道收發(fā)器/寄存器，反向（三態(tài)）) |
| 74F648A | Octal transceiver/register, non-inverting(3-State)(八通道收發(fā)器/寄存器，同向（三態(tài)）) |
| 74F649 | Octal transceiver/register, non-inverting open-collector |
| 74F647 | Octal transceiver/register, non-inverting open-collector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F646_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Transceiver/Register with 3-STATE Outputs |
| 74F646_XDC3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F646A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal transceiver/register, non-inverting 3-State |
| 74F646B | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Transceiver/Register with 3-STATE Outputs |
| 74F646BFCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
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