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74LV245PWDH Arkusz danych(PDF) 6 Page - NXP Semiconductors

Numer części 74LV245PWDH
Szczegółowy opis  Octal bus transceiver 3-State
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LV245PWDH Arkusz danych(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LV245
Octal bus transceiver (3-State)
1998 Apr 20
6
AC CHARACTERISTICS
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ
CONDITION
LIMITS
SYMBOL
PARAMETER
WAVEFORM
CONDITION
–40 to +85
°C
–40 to +125
°C
UNIT
VCC(V)
MIN
TYP1
MAX
MIN
MAX
1.2
45
28
Propagation delay
2.0
15
28
34
tPHL/tPLH
Pro agation delay
An to Bn;
B tA
Figures 1
2.7
11
19
24
ns
Bn to An
3.0 to 3.6
92
16
20
4.5 to 5.5
83
11
14
1.2
55
3-State output enable time
2.0
19
31
39
tPZH/tPZL
3-State out ut enable time
OE to An;
OE tB
Figures 2
2.7
14
23
29
ns
OE to Bn
3.0 to 3.6
102
18
23
4.5 to 5.5
8.53
14
18
1.2
65
3-State output disable time
OE tA
2.0
24
32
39
tPHZ/tPLZ
OE to An;
OE to Bn
Figures 2
2.7
18
24
29
ns
OE to Bn
3.0 to 3.6
142
20
24
4.5 to 5.5
11.53
16
19
NOTES:
1. Unless otherwise stated, all typical values are measured at Tamb = 25°C
2. Typical values are measured at VCC = 3.3 V.
3. Typical values are measured at VCC = 5.0 V.
AC WAVEFORMS
VM = 1.5 V at VCC ≥ 2.7 V and ≤ 3.6 V
VM = 0.5 V × VCC at VCC < 2.7 V and ≥ 4.5 V
VOL and VOH are the typical output voltage drop that occur with the output load.
VX = VOL + 0.3 V at VCC ≥ 2.7 V and ≤ 3.6 V
VX = VOL + 0.1 × VCC at VCC < 2.7 V and ≥ 4.5 V
VY = VOH – 0.3 V at VCC ≥ 2.7V and ≤ 3.6 V
VY = VOH – 0.1 × VCC at VCC < 2.7 V and ≥ 4.5 V
SV00627
VM
An, Bn INPUT
Bn, An OUTPUT
VM
tPLH
tPHL
Figure 1. Input (An, Bn) to output
(Bn, An) propagation delays and the output transition times.
SV00628
outputs
disabled
outputs
enabled
outputs
enabled
tPHZ
tPZH
tPZL
tPLZ
VM
VM
VM
OE INPUT
HIGH-to-OFF
OFF-to-HIGH
LOW-to-OFF
OFF-to-LOW
VX
VY
GND
VCC
OUTPUT
VI
VOL
VOH
OUTPUT
GND
Figure 2. 3-State enable and disable times.


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