N74F245 Philips, N74F245 Datasheet - Page 5

• Manufacturer Part Number: N74F245
• Description: Octal transceiver 3-State
• Manufacturer: Philips

Philips Semiconductors
AC WAVEFORMS
For all waveforms, V
TEST CIRCUIT AND WAVEFORMS
November 15, 1994
Waveform 2. 3-State Output Enable Time to High Level and
Octal transceiver (3-State)
Waveform 1. Propagation Delay for Non-Inverting Output
An, Bn
SWITCH POSITION
GENERATOR
DEFINITIONS:
R
C
R
An, Bn
Bn, An
OE
TEST
t
t
All other
T
L
L
PLZ
PZL
PULSE
= Load resistor;
= Load capacitance includes jig and probe capacitance;
= Termination resistance should be equal to Z
Test Circuit for Open Collector Outputs
see AC electrical characteristics for value.
see AC electrical characteristics for value.
pulse generators.
Output Disable Time from High Level
V
IN
M
= 1.5V.
SWITCH
closed
closed
open
V
M
R
V
t
PZH
T
t
M
PLH
D.U.T.
V
V
CC
M
V
V
M
OUT
V
M
V
C
t
M
PHZ
L
t
PHL
V
R
R
M
L
L
OUT
V
SF00202
OH
SF00203
of
–0.3V
7.0V
0V
NEGATIVE
PULSE
POSITIVE
PULSE
5
family
74F
90%
Waveform 3. 3-State Output Enable Time to Low Level and
10%
An, Bn
amplitude
OE
3.0V
V
INPUT PULSE REQUIREMENTS
V
M
90%
M
10%
Output Disable Time from Low Level
t
t
TLH (
THL (
Input Pulse Definition
1.5V
V
M
t
t
r
f
)
)
rep. rate
1MHz
t
t
V
w
w
M
t
PZL
t
t
TLH (
THL (
500ns
t
t
r
f
t
10%
90%
V
)
)
w
M
V
V
M
M
2.5ns
t
TLH
V
M
t
PLZ
Product specification
90%
10%
74F245
2.5ns
t
THL
AMP (V)
0V
0V
AMP (V)
V
SF00128
OL
SF00204
+0.3V