參數(shù)資料
型號(hào): 7LVT2245PWDH
廠商: NXP Semiconductors N.V.
英文描述: 3.3V Octal transceiver with 30ohm termination resistors 3-State
中文描述: 3.3八路收發(fā)器與30ohm端接電阻器三態(tài)
文件頁(yè)數(shù): 5/10頁(yè)
文件大?。?/td> 93K
代理商: 7LVT2245PWDH
Philips Semiconductors
Product specification
74LVT2245
3.3V Octal transceiver with 30
termination resistors (3-State)
1998 Feb 19
5
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
V
CC
= 2.7V
UNIT
MIN
TYP
MAX
MAX
t
PLH
t
PHL
Propagation delay
An to Bn or Bn to An
1
1.0
1.0
3.2
3.1
4.6
4.5
5.3
4.9
ns
t
PZH
t
PZL
Output enable time
to High and Low level
2
1.1
1.5
4.5
4.3
7.0
6.5
9.1
7.6
ns
t
PHZ
t
PLZ
Output disable time
from High and Low Level
2
2.2
2.0
3.7
3.6
5.2
5.0
5.6
5.0
ns
NOTE:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25
°
C.
AC WAVEFORMS
V
M
= 1.5V, V
IN
= GND to 2.7V
An or Bn
INPUT
V
M
V
M
Bn or An
OUTPUT
V
M
V
M
t
PHL
t
PLH
SA00192
Waveform 1. Input (An or Bn) to Output (Bn or An) Propagation
Delays
OE INPUT
t
PZH
t
PHZ
Bn or An
OUTPUT
V
OH
V
OH
– 0.3V
An or Bn
OUTPUT
V
OL
t
PZL
t
PLZ
3.0V
0V
V
OL
+ 0.3V
2.7V
1.5V
1.5V
1.5V
1.5V
0V
SV00106
Waveform 2. 3-State Output Enable and Disable Times
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