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參數(shù)資料
| 型號(hào)： | 74F2244 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal buffer with 30ohm equivalent output termination 3-State |
| 中文描述： | 八路緩沖區(qū)30ohm相當(dāng)于輸出端接三態(tài) |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大小： | 95K |
| 代理商： | 74F2244 |
Philips Semiconductors
Octal buffer with 30
equivalent output termination
(3-State)
Product specification
74F2244
1994 Dec 05
5
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
V
M
V
M
V
M
V
M
Yn
Ian, Ibn
t
PLH
t
PHL
SF00231
Waveform 1. Propagation delay for data to outputs
V
OH
–0.3V
V
M
V
M
V
M
Yn
t
PZH
t
PHZ
SF00233
OEn
0V
Waveform 2. 3-State output enable time to high level
and output disable time from high level
V
OL
+0.3V
V
M
V
M
V
M
Yn
t
PZL
t
PLZ
SF00234
OEn
3.5V
Waveform 3. 3-State output enable time to low level
and output disable time from low level
TEST CIRCUIT AND WAVEFORMS
SWITCH POSITION
TEST
SWITCH
closed
open
All other
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
2.5ns
1MHz
500ns 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 3-State outputs
DEFINITIONS:
R
L
=
Load resistor; see AC electrical characteristics for
value.
C
L
=
Load capacitance includes jig and probe
capacitance; see AC electrical characteristics for
value
R
T
=
Termination resistance should be equal to Z
OUT
of
pulse generators.
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
t
PLZ
, t
PZL
SF000235
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F2244 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F2244DC | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74F2244FC | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74F2244FCQR | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74F2244FCX | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
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