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74ABT2245 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. 74ABT2245
Description  Octal transceiver with direction pin with 30ohm series termination resistors 3-State
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74ABT2245 Datasheet(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74ABT2245
Octal transceiver with direction pin
and 30
Ω series termination resistors (3-State)
1998 Jan 16
6
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω
LIMITS
SYMBOL
PARAMETER
WAVEFORM
Tamb = +25°C
VCC = +5.0V
Tamb = –40°C to +85°C
VCC = +5.0V ±0.5V
UNIT
Min
Typ
Max
Min
Max
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
1
1.0
1.0
2.8
3.9
4.2
5.0
1.0
1.0
4.7
5.4
ns
tPZH
tPZL
Output enable time
to High and Low level
2
1.3
3.0
3.5
5.5
4.6
7.0
1.3
3.0
5.5
7.8
ns
tPHZ
tPLZ
Output disable time
from High and Low Level
2
1.5
1.0
4.0
3.4
5.4
4.6
1.5
1.0
6.3
5.0
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
An or Bn
INPUT
VM
VM
Bn or An
OUTPUT
VM
VM
tPLH
tPHL
SA00124
Waveform 1. Waveforms Showing the Input to Output
Propagation Delays
OE
INPUT
VM
VM
tPZH
tPHZ
OUTPUT
VOH
VM
VM
OUTPUT
VOL
tPZL
tPLZ
3.5V
0V
VOL + 0.3V
VOH – 0.3V
SA00314
Waveform 2. Waveforms Showing the 3-State Output Enable
and Disable Times
TEST CIRCUIT AND WAVEFORMS
CL = 50 pF
500
Load Circuit
DEFINITIONS
CL =
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
TEST
S1
tpd
open
tPLZ/tPZL
7 V
tPHZ/tPZH
open
SA00012
500
From Output
Under Test
S1
7 V
Open
GND


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