參數(shù)資料
型號： 74AHC245PWDH
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： Octal bus transceiver; 3-state
中文描述： AHC SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝： 4.40 MM, PLASTIC, SOT-360-1, TSSOP-20
文件頁數(shù)： 2/20頁
文件大小： 88K
代理商： 74AHC245PWDH
1999 Sep 28
2
Philips Semiconductors
Product specification
Octal bus transceiver; 3-state
74AHC245; 74AHCT245
FEATURES
ESD protection:
HBM EIA/JESD22-A114-A
exceeds 2000 V
MM EIA/JESD22-A115-A
exceeds 200 V
CDM EIA/JESD22-C101
exceeds 1000 V
Balanced propagation delays
All inputs have a Schmitt-trigger
action
Inputsacceptsvoltageshigherthan
V
CC
For AHC only:
operates with CMOS input levels
For AHCT only:
operates with TTL input levels
Specified from
40 to +85 and +125
°
C.
DESCRIPTION
The 74AHC/AHCT245 is a
high-speed Si-gate CMOS device.
The 74AHC/AHCT245 is an octal
transceiver featuring non-inverting
3-state bus compatible outputs in
both send and receive directions.
The74AHC245/74AHCT245features
an Output Enable (OE) input for easy
cascading and a send/receive (DIR)
input for direction control.
OE controls the outputs so that the
buses are effectively isolated.
FUNCTION TABLE
See Note 1.
Note
1.
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
≤
3.0 ns.
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W).
P
D
= C
PD
×
V
CC2
×
f
i
+
∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in Volts.
The condition is V
I
= GND to V
CC
.
2.
INPUTS
INPUTS/OUTPUTS
OE
DIR
A
n
B
n
L
L
H
L
H
X
A = B
inputs
Z
inputs
B = A
Z
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
AHC
AHCT
t
PHL
/t
PLH
propagation delay
A
n
to B
n
, B
n
to A
n
input capacitance
output
capacitance
power dissipation
capacitance
C
L
= 15 pF;
V
CC
= 5 V
3.5
5.0
ns
C
I
C
O
V
I
= V
CC
or GND 3.5
3.5
4.0
pF
pF
4.0
C
PD
C
L
= 50 pF;
f = 1 MHz;
notes 1 and 2
12
15
pF
相關(guān)PDF資料
PDF描述
74AHCT257 Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
74AHCT259 Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
74AHC259 8-bit addressable latch(8位可尋址鎖存器)
74AHCT273 Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
74AHC273 Octal D-type flip-flop with reset;positive-edge trigger(帶復(fù)位的八D觸發(fā)器；上升沿觸發(fā))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74AHC245PW-Q100J 制造商:NXP Semiconductors 功能描述:74AHC245PW-Q100/TSSOP20/REEL13 制造商:NXP Semiconductors 功能描述:74AHC245PW-Q100/TSSOP20/REEL13 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC TXRX OCTA BUS 3ST 20TSSOP
74AHC245PW-T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver
74AHC257 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad 2-input multiplexer; 3-state
74AHC257_08 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad 2-input multiplexer 3-state
74AHC257D 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 QUAD 2-INPUT MULTIPLEXER RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray
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，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，查看報價

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，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*