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74LVT640 Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. 74LVT640
Description  3.3V Octal transceiver with direction pin; inverting 3-State
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LVT640 Datasheet(HTML) 5 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LVT640
3.3V Octal transceiver with direction pin; inverting
(3-State)
1998 Feb 19
5
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.
LIMITS
SYMBOL
PARAMETER
WAVEFORM
VCC = 3.3V +0.3V
VCC = 2.7V
UNIT
MIN
TYP1
MAX
MAX
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
NO TAG
1.0
1.0
2.3
2.4
3.7
3.3
4.5
3.1
ns
tPZH
tPZL
Output enable time
to High and Low level
NO TAG
1.1
1.5
3.5
3.6
5.3
5.3
6.9
6.2
ns
tPHZ
tPLZ
Output disable time
from High and Low Level
NO TAG
2.2
2.0
3.7
3.1
5.0
4.5
5.6
4.5
ns
NOTES:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
An or Bn
INPUT
VM
VM
Bn or An
OUTPUT
VM
VM
tPHL
tPLH
SA00192
Waveform 1. Input (An or Bn) to Output (Bn or An) Propagation
Delays
OE INPUT
tPZH
tPHZ
Bn or An
OUTPUT
VOH
An or Bn
OUTPUT
VOL
tPZL
tPLZ
3.0V
0V
VOL + 0.3V
VOH – 0.3V
2.7V
1.5V
1.5V
1.5V
1.5V
0V
SV00106
Waveform 2. 3-State Output Enable and Disable Times


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