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參數(shù)資料
| 型號： | 935067510602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | ABT SERIES, OCTAL 1-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 封裝： | PLASTIC, SO-24 |
| 文件頁數(shù)： | 7/7頁 |
| 文件大小： | 82K |
| 代理商： | 935067510602 |
Philips Semiconductors
Product specification
74ABT853
8-bit transceiver with 9-bit parity checker/
generator and flag latch (3-State)
1995 Sep 06
7
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
0
2
4
6
8
10
12
14
16
18
0
100
200
300
400
500
600
Load resistor (
)
Propagation
delay
(ns)
tPLH
tPHL
NOTE:
When using Open-Collector parts, the value of the pull–up resistor greatly affects the value of the tPLH. For example, changing the specified pull-up resistor value from
500
to 100 will improve the tPLH over 300% with only a slight change in the tPHL. However, if the value of the pull-up resistor is changed, the user must make certain
that the total IOL current through the resistor and the total IIL’s of the receivers does not exceed the IOL maximum specification.
SA00241
TEST CIRCUIT AND WAVEFORM
LOAD VALUES
OUTPUT
RX
VX
ERROR
100
VCC
All other
500
7.0V
PULSE
GENERATOR
RT
VIN
D.U.T
VOUT
CL
RL
VCC
RX
VX
Test Circuit for 3-State Outputs
VM
tW
AMP (V)
NEGATIVE
PULSE
10%
90%
0V
VM
tW
AMP (V)
POSITIVE
PULSE
90%
10%
0V
tTHL (tF)
tTLH (tR)tTHL (tF)
tTLH (tR)
VM = 1.5V
Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
Amplitude
Rep. Rate
tW
tR
tF
74ABT
3.0V
1MHz
500ns
2.5ns
SWITCH POSITION
TEST
SWITCH
tPLZ
closed
tPZL
closed
All other
open
SA00242
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