SN74LVC32245 Datasheet, PDF (6/9 Pages) Texas Instruments – 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

SN74LVC32245
32-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES343D – OCTOBER 2000 – REVISED JULY 2003
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL
(see Note A)
VLOAD
RL
S1
Open
GND
RL
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
LOAD CIRCUIT
VCC
1.8 V ± 0.15 V
2.5 V ± 0.2 V
2.7 V
3.3 V ± 0.3 V
INPUTS
VI
tr/tf
VCC
VCC
2.7 V
2.7 V
≤2 ns
≤2 ns
≤2.5 ns
≤2.5 ns
VM
VCC/2
VCC/2
1.5 V
1.5 V
VLOAD
2 × VCC
2 × VCC
6V
6V
CL
30 pF
30 pF
50 pF
50 pF
RL
1 kΩ
500 Ω
500 Ω
500 Ω
V_∆
0.15 V
0.15 V
0.3 V
0.3 V
Input
tw
VI
VM
VM
0V
VOLTAGE WAVEFORMS
PULSE DURATION
Timing Input
Data Input
VI
VM
0V
tsu
VM
th
VI
VM
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VI
Input
VM
VM
0V
tPLH
Output
VM
tPHL
VOH
VM
VOL
tPHL
tPLH
Output
VOH
VM
VM
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Control
VM
VM
tPZL
Output
tPLZ
Waveform 1
S1 at VLOAD
(see Note B)
VM
VOL + V_∆
tPZH
Output
tPHZ
Waveform 2
S1 at GND
VM
VOH – V_∆
(see Note B)
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
VI
0V
VLOAD/2
VOL
VOH
≈0 V
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
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