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74LV244PWDH View Datasheet(PDF) - Philips Electronics

Part Name
Description
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74LV244PWDH
Philips
Philips Electronics Philips
74LV244PWDH Datasheet PDF : 12 Pages
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Philips Semiconductors
Octal buffer/line driver (3-State)
Product specification
74LV244
AC CHARACTERISTICS
GND = 0V; tr = tf 2.5ns; CL = 50pF; RL =1K
SYMBOL
PARAMETER
WAVEFORM
CONDITION
VCC(V)
1.2
tPHL/tPLH
Propagation delay
1An to 1Yn;
2An to 2Yn
Figures 1, 2
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
tPZH/tPZL
3-State output enable time
1OE to 1Yn;
2OE to 2Yn
Figures 2, 3
2.0
2.7
3.0 to 3.6
4.5 to 5.5
1.2
tPHZ/tPLZ
3-State output disable time
1OE to 1Yn;
2OE to 2Yn
Figures 2, 3
2.0
2.7
3.0 to 3.6
4.5 to 5.5
NOTES:
1. Unless otherwise stated, all typical values are measured at Tamb = 25°C.
2. Typical values are measured at VCC = 3.3 V.
LIMITS
–40 to +85 °C
–40 to +125 °C
MIN TYP1 MAX MIN MAX
50
17
24
31
13
17
23
92
14
18
12
15
65
22
39
49
16
29
36
122
23
29
19
24
60
22
34
43
17
24
32
132
21
26
16
19
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5 V at VCC 2.7 V and 3.6 V
VM = 0.5 × 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
VI
1An, 2An
INPUTS
GND
VOH
tPHL
1Yn, 2Yn
OUTPUT
VOL
VM
VM
tPLH
SV00617
Figure 1. Input (1An, 2An) to output (1Yn, 2Yn)
propagation delays.
VI
OE INPUT
GND
VCC
Qn OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
VOH
Qn OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
VM
tPLZ
tPZL
VX
tPHZ
VM
tPZH
VY
outputs
enabled
outputs
disabled
VM
outputs
enabled
SV00623
Figure 2. 3-State enable and disable times.
1998 May 20
6
 

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