參數(shù)資料
型號: 935084690118
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: 7.50 MM, PLASTIC, MS-013, SOT-137-1, SO-24
文件頁數(shù): 11/12頁
文件大?。?/td> 111K
代理商: 935084690118
Philips Semiconductors
Product data
74F657
Octal transceiver with 8-bit parity generator/checker
2003 Feb 04
8
TEST CIRCUIT AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
0V
tTHL (tf )
INPUT PULSE REQUIREMENTS
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
Input Pulse Definition
VCC
family
74F
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test Circuit for Open Collector Outputs
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
tTHL (tf )
tTLH (tr )
AMP (V)
amplitude
3.0V
1.5V
VM
RL
7.0V
SF00128
TEST
SWITCH
tPLZ
closed
tPZL
closed
All other
open
SWITCH POSITION
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