參數(shù)資料
型號(hào)： 74LVCH244A
廠商： NXP Semiconductors N.V.
元件分類： 通用總線功能
英文描述： 14-Bit Asynchronous Binary Counters 16-TSSOP -40 to 85
中文描述： 八路緩沖器/線路驅(qū)動(dòng)器5伏耐輸入/輸出3 - Statetitle
文件頁數(shù)： 6/10頁
文件大小： 96K
代理商： 74LVCH244A
Philips Semiconductors
Product specification
74LVC244A
74LVCH244A
Octal buffer/line driver with 5-volt
tolerant inputs/outputs (3-State)
1998 May 20
6
AC CHARACTERISTICS
GND = 0V; t
r
= t
f
2.5ns; C
L
= 50pF; R
L
= 500
; T
amb
= –40
°
C to +85
°
C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
V
CC
= 3.3V
±
0.3V
MIN
TYP
1
V
CC
= 2.7V
MIN
V
CC
= 1.2V
TYP
UNIT
MAX
MAX
t
PHL
t
PLH
Propagation delay
1A
n
to 1Y
n
;
2A
n
to 2Y
n
3-State output enable time
1OE to 1Y
n
;
2OE to 2Y
n
3-State output disable time
1OE to 1Y
n
;
2OE to 2Y
n
1, 3
1.5
3.5
5.9
1.5
6.9
16.0
ns
t
PZH
t
PZL
2, 3
1.5
4.3
7.6
1.5
8.6
19.0
ns
t
PHZ
t
PLZ
2, 3
1.5
3.7
5.8
1.5
6.8
17.0
ns
NOTE:
1. Unless otherwise stated, all typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
AC WAVEFORMS
V
M
= 1.5 V at V
CC
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
V
X
= V
OL
+ 0.3V at V
CC
≥
2.7V; V
X
= V
OL
+ 0.1 V
CC
at V
CC
< 2.7V
V
Y
= V
OH
– 0.3V at V
CC
≥
2.7V; V
Y
= V
OH
– 0.1 V
CC
at V
CC
< 2.7V
2.7 V; V
M
= 0.5 V
CC
at V
CC
< 2.7 V
SY00041
INPUT
V
M
t
PHL
t
PLH
V
OL
V
I
V
M
GND
V
OH
OUTPUT
Waveform 1. Input (D
n
) to output (Qn) propagation delays.
t
PLZ
t
PZL
V
I
nOE INPUT
GND
V
CC
Q
OUTPUT
LOW-to-OFF
OFF-to-LOW
V
OL
V
OH
Q
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
outputs
enabled
outputs
disabled
t
PHZ
V
M
V
M
V
M
t
PZH
V
X
V
Y
SW00207
Waveform 2. 3-State enable and disable times.
TEST CIRCUIT
PULSE
GENERATOR
R
T
V
IN
D.U.T.
V
OUT
C
L
V
CC
R
L
=500
SWITCH POSITION
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
SWITCH
Open
2
V
CC
GND
Test Circuit for 3-State Outputs
Open
GND
S
1
2
V
CC
DEFINITIONS
R
L
= Load resistor
C
L
= Load capacitance includes jig and probe capacitance
R
T
=Termination resistance should be equal to Z
OUT
of pulse generators.
V
CC
2.7V
2.7 – 3.6V
V
IN
V
CC
2.7V
SW00047
R
L
=500
Waveform 3. Load circuitry for switching times.
相關(guān)PDF資料
PDF描述
74LVC244 Octal buffer/line driver with 5-volt tolerant inputs/outputs 3-Statetitle
74LVC244A Octal buffer/line driver with 5-volt tolerant inputs/outputs 3-Statetitle
74LVC244AMTR LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) HIGH PERFORMANCE
74LVC244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
74LVCH245A Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)(具有定向引腳的5V輸入/輸出容限的八位總線收發(fā)器（三態(tài)）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74LVCH244ABQ 制造商:NXP Semiconductors 功能描述:Bulk 制造商:NXP Semiconductors 功能描述:IC OCT BUFF/DVR TRI-ST DHV 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin DHVQFN EP T/R
74LVCH244ABQ,115 功能描述:緩沖器和線路驅(qū)動(dòng)器 QUAD BUF 3-S BUS RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
74LVCH244ABQ-G 功能描述:緩沖器和線路驅(qū)動(dòng)器 QUAD BUF 3-S BUS HOLD RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
74LVCH244ABQ-Q100X 制造商:NXP Semiconductors 功能描述:74LVCH244ABQ-Q100/DHVQFN20/REE - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC BUFFER/LINE DVR OCT 20DHVQFN
74LVCH244ABX 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin DHXQFN20U EP T/R Cut Tape
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*