PI74LVC3245AL PERICOM [Pericom Semiconductor Corporation], PI74LVC3245AL Datasheet - Page 6

• Manufacturer Part Number: PI74LVC3245AL
• Description: 8-Bit Dual Supply Bus Transceiver with 3-State Outputs
• Manufacturer: PERICOM [Pericom Semiconductor Corporation]

Notes:
A. C
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
C. All input impulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z
D. The outputs are measured one at a time with one transition per measurement.
Power- Up Considerations
To avoid excessive supply current, bus contention or oscillation during power-up, the following guidelines should be followed:
1. Connect ground first before any supply voltage is applied.
2. Power up V
3. Ramp OE ahead of or with V
4. Ramp DIR with V
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
L
From Output
Under Test
includes probe and jig capacitance.
Input
Output
B-Port
CL = 50pF
(See Note A)
CCA
50
Propagation Delay Times
, which is the control side of the device.
Voltage Waveforms
PARAMETER MEASUREMENT INFORMATION FOR A TO B PORT
1.5V
CCA
t
PLH
Load Circuit
if DIR high is needed (A bus to B bus). Otherwise keep DIR Low.
50% V CCB
CCA
500Ω
500Ω
to help prevent bus contention
Figure 1. Load Circuit and Voltage Waveforms
500Ω
500Ω
V
CCA
1.5V
t
PHL
=2.7V TO 3.6V and V
ADVANCE INFORMATION
S1
50% V CCB
2.7V
0V
V
V
GND
2xV CCB
OH
OL
Open
6
S1 at 2 x V
(see Note B)
(see Note B)
Waveform 1
Waveform 2
S1 at GND
CCB
Control
Output
Output
Output
CCB
= 5V ± 0.5V
t
t
Enable and Disable Times
PZH
PZL
50% V
t
t
t
Voltage Waveforms
PLH
PHZ
PLZ
8-Bit Dual Supply Bus Transceiver
Test
CCB
/t
/t
/t
1.5V
PHL
PZL
PZH
O
50% V
= 50Ω, t
CCB
R
≤ 2.5ns, t
with 3-State Outputs
2 x V
1.5V
Open
GND
PI74LVC3245A
S1
V
V
F
OL
OH
CCB
t
≤ 2.5ns.
t
PLZ
PHZ
+0.3V
P-0.3
–0.3V
2.7V
0V
V
V
V
0V
CCB
OL
OH
08/05/03