參數(shù)資料
型號(hào): 74ABT834N
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 通用總線(xiàn)功能
英文描述: Octal inverting transceiver with parity generator/checker 3-State
中文描述: ABT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP24
封裝: 0.300 INCH, PLASTIC, DIP-24
文件頁(yè)數(shù): 7/7頁(yè)
文件大?。?/td> 58K
代理商: 74ABT834N
Philips Semiconductors Advanced BiCMOS Products
Objective specification
74ABT834
Octal inverting transceiver with parity
generator/checker (3–State)
June 9, 1992
7
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
Load resistor (
)
P
0
2
4
6
8
10
12
14
16
18
0
100
200
300
400
500
600
t
PLH
t
PHL
NOTE:
When using Open–Collector parts, the value of the pull–up resistor greatly affects the value of the t
PLH
. For example, changing the
specified pull–up resistor value from 500
to 100
will improve the t
PLH
over 300% with only a slight change in the t
PHL
. However,
if the value of the pull–up resistor is changed, the user must make certain that the total I
OL
current through the resistor and the total
I
IL
’s of the receivers does not exceed the I
OL
maximum specification.
TEST CIRCUIT AND WAVEFORM
LOAD VALUES
OUTPUT
R
X
100
V
CC
500
7.0V
V
X
ERROR
All other
PULSE
GENERATOR
R
T
V
IN
D.U.T
V
OUT
C
L
R
L
V
CC
R
X
V
X
Test Circuit for 3–State Outputs
V
M
V
M
t
W
AMP (V)
NEGATIVE
PULSE
10%
10%
90%
90%
0V
V
M
V
M
t
W
AMP (V)
POSITIVE
PULSE
90%
90%
10%
10%
0V
t
THL
(t
F
)
t
TLH
(t
R
)
t
THL
(t
F
)
t
TLH
(t
R
)
V
M
= 1.5V
Input Pulse Definition
DEFINITIONS
R
L
=
Load resistor; see AC CHARACTERISTICS for value.
C
L
=
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
R
T
=
Termination resistance should be equal to Z
OUT
of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
Amplitude
Rep. Rate
t
W
t
R
t
F
74ABT
3.0V
1MHz
500ns
2.5ns
2.5ns
SWITCH POSITION
TEST
t
PLZ
t
PZL
All other
SWITCH
closed
closed
open
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