74ABT245 Philips Semiconductors, 74ABT245 Datasheet - Page 5

• Manufacturer Part Number: 74ABT245
• Description: Octal transceiver with direction pin 3-State
• Manufacturer: Philips Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
GND = 0V; t
AC WAVEFORMS
V
TEST CIRCUIT AND WAVEFORMS
1998 Jan 16
M
SYMBOL
Octal transceiver with direction pin (3-State)
= 1.5V, V
t
t
t
t
t
t
An or Bn
PLH
PHL
PZH
PHZ
PZL
PLZ
OUTPUT
Waveform 1. Waveforms Showing the Input to Output
Bn or An
INPUT
DEFINITIONS
C
From Output
Under Test
L
=
R
IN
= t
C
Propagation delay
An to Bn or Bn to An
Output enable time
to High and Low level
Output disable time
from High and Low Level
= GND to 3.0V
Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
L
F
= 50 pF
= 2.5ns; C
V
M
t
PLH
Propagation Delays
PARAMETER
t
t
PHZ
PLZ
TEST
t
L
pd
/t
/t
PZL
PZH
= 50pF, R
V
500
M
Load Circuit
500
open
open
7 V
L
S1
= 500
S1
V
M
t
7 V
GND
PHL
SA00012
Open
WAVEFORM
SA00124
V
M
1
2
2
5
Min
1.0
1.0
1.3
2.3
1.0
1.0
Waveform 2. Waveforms Showing the 3-State Output Enable
nOE INPUT
OUTPUT
OUTPUT
T
V
amb
CC
Typ
= +5.0V
2.2
2.9
3.0
4.0
4.7
4.1
= +25 C
V
M
t
t
PZL
PZH
Max
4.1
4.2
4.8
5.8
6.2
5.8
LIMITS
and Disable Times
V
V
M
M
T
amb
V
Min
1.0
1.0
1.3
2.3
1.0
1.0
CC
= –40 C to +85 C
= +5.0V 0.5V
V
M
t
t
PLZ
PHZ
74ABT245
Max
4.6
4.6
5.3
6.3
7.2
6.3
Product specification
V
V
V
V
3.5V
OL
OL
OH
OH
UNIT
SA00024
0V
ns
ns
ns
+ 0.3V
– 0.3V