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參數(shù)資料
| 型號(hào)： | 933784340602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁(yè)數(shù)： | 9/11頁(yè) |
| 文件大?。?/td> | 94K |
| 代理商： | 933784340602 |
Philips Semiconductors
Product specification
74F640
Octal bus transceiver, inverting (3-State)
1989 Nov 27
7
AC WAVEFORMS
For all waveforms, VM = 1.5V.
An, Bn
Bn, An
tPHL
VM
tPLH
SF00773
Waveform 1. Propagation Delay for Inverting Outputs
VOL+0.3V
VM
An, Bn
tPZL
tPLZ
SF00204
OE
Waveform 2. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
VOH–0.3V
VM
An, Bn
tPZH
tPHZ
SF00203
OE
0V
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
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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