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參數(shù)資料
| 型號(hào)： | 935024270112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, TRIPLE 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大小： | 108K |
| 代理商： | 935024270112 |
Philips Semiconductors
Product specification
74F777
Triple bidirectional latched bus transceiver (3–State +
Open Collector)
May 19, 1992
8
VM
tPHZ
tPZH
VOH -0.3V
0V
OEAn
An
SF00439
Waveform 3. 3-State output enable time to High level and
output disable time from High level
VM
tPLZ
tPZL
VOL +0.3V
An
OEAn
SF00440
Waveform 4. 3-State output enable time to Low level and output
disable time from Low level
Notes to AC waveforms
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
TEST CIRCUITS AND WAVEFORMS
tw
90%
VM
10%
90%
VM
10%
90%
VM
10%
90%
VM
10%
NEGATIVE
PULSE
POSITIVE
PULSE
tw
AMP (V)
low V
tTHL (tf )
INPUT PULSE REQUIREMENTS
rep. rate
tw
tTLH
tTHL
1MHz
500ns 2.5ns
2.5ns
Input pulse definition
VCC
family
A port
D.U.T.
PULSE
GENERATOR
RL
CL
RT
VIN
VOUT
Test circuit for 3–State outputs on A port
DEFINITIONS:
RL = Load resistor; see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value.
RU = Pull up resistor; see AC electrical characteristics for value.
CD = 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
VCC
D.U.T.
PULSE
GENERATOR
CD
RT
VIN
VOUT
Test circuit for outputs on B port
RU
7.0V
1MHz
500ns
B port
2.0V
1.0V
4.0ns
Low V
0.0V
1.0V
SWITCH POSITION
TEST
SWITCH
closed
open
All other
tPLZ, tPZL
SF00431
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