74lvc161284 STMicroelectronics, 74lvc161284 Datasheet - Page 6

• Manufacturer Part Number: 74lvc161284
• Description: Low Voltage High Speed Ieee1284 Transceiver
• Manufacturer: STMicroelectronics

74LVC161284
TEST CIRCUIT
C
R
R
WAVEFORM 1: PROPAGATION DELAY INPUT An TO OUTPUT (f=1MHz; 50% duty cycle)
6/11
t
t
(see waveform 1)
t
t
t
t
t
t
t
t
PHL
PLH
PHL
r
PLZ
PHZ
PZL
PZH
PLZ
PHZ
L
L
T
, t
= 50 pF or equivalent (includes jig and probe capacitance)
= R1 = 500 or equivalent
= Z
f
(A1-A8 to B1-B8, A9-A13 to Y9-Y13) (see waveform 1)
, t
(DIR to A1-A8) (see waveform 4)
(DIR to A1-A8) (see waveform 3)
(DIR to B1-B8) (see waveform 4)
(A1-A8 to B1-B8, A9-A13 to Y9-Y13, PLH
(A1-A8 to B1-B8, A9-A13 to Y9-Y13, PLH
(DIR to A1-A8) (see waveform 4)
(DIR to A1-A8) (see waveform 3)
(DIR to B1-B8) (see waveform 4)
OUT
PLH
of pulse generator (typically 50 )
(B1-B8 to A1-A8, C14-C17 to A14-A17, HLH
TEST
IN
IN
to PLH, HD to B1-B8, Y9-Y13, PLH)
to PLH) (see waveform 1)
IN
to HLH) (see waveform 2)
Open
Open
Open
Open
Open
Open
1.4V
4.4V
S1
6V
6V
GND
GND
GND
GND
GND
GND
GND
GND
V
V
S2
CC
CC
GND
GND
GND
GND
GND
GND
GND
GND
GND
V
S3
CC