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PDF 74HCT1284 Data sheet ( Hoja de datos )
| Número de pieza | 74HCT1284 | |
| Descripción | Parallel printer interface transceiver/buffer | |
| Fabricantes | Philips | |
| Logotipo |  |
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INTEGRATED CIRCUITS
74HCT1284
Parallel printer interface transceiver/buffer
Product specification
Supersedes data of 1995 Jun 27
IC06 Data Handbook
1998 Jul 10
Philips
Semiconductors
1 page  
Philips Semiconductors
Parallel printer interface transceiver/buffer
Product specification
74HCT1284
AC CHARACTERISTICS
GND = 0V, tR = tF = 3.0ns, CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
WAVEFORM
SR B-Side Slew Rate
tPLH
tPHL
tPLH
tPHL
tPZH
tPHZ
tPZL
tPLZ
Propagation delay
A toY or A to B
Propagation delay
B to A
Output enable/disable time to/from High level
HD to Y or HD to B
Output enable/disable time to/from Low level
A to Y or A to B
2
1
3
4
LIMITS
Tamb = 25°C
VCC = 5.0V
MIN TYP MAX
0.05 0.11
0.4
5.0 13.9 17.1
5.0 21.0 25.7
1.5 5.3 7.5
1.5 5.6 7.9
4.0 12.0 16.0
2.0 6.5 9.1
5.0 12.7 16.3
1.5 5.0 7.1
Tamb = 0 to + 70°C
VCC = Min to Max
MIN MAX
0.05 0.4
5.0 22
5.0 31
1.5 9.0
1.5 10.0
4.0 20.0
2.0 11.0
5.0 20.0
1.5 9.0
UNIT
V/ns
ns
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
Bn Input
VM VM
A1 – A4
Output
tPLH
tPHL
50% VCC
VOH
50% VCC
VOL
SK00003
Waveform 1. Propagation Delay for Bn to A1–A4
An Input
VM VM
Bn or Yn
Output
tPLH
tPHL
VOH–1.4V
VOH
VOH–1.4V
VOL
SK00004
Waveform 2. Propagation Delay for An to Bn or Yn Outputs
HD Inputs
VM
tPZH
VM
tPHZ
Bn or Yn Output
VM
VOH
VOH–0.3V
0V
SK00005
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
An Input
VM
tPZL
VM
tPLZ
Bn or Yn
Output
VM VOL +0.3V
VOL
SK00006
Waveform 4. 3-State Output enable Time to Low Level and
Output disable Time from Low Level
1998 Jul 10
5
5 Page 
Philips Semiconductors
Parallel printer interface transceiver/buffer
NOTES
Product specification
74HCT1284
1998 Jul 10
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74HCT1284.PDF ] | |
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