SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
PARAMETER MEASUREMENT INFORMATION
V
CC
= 2.5 V
±
0.2 V
2
×
VCC
From Output
Under Test
CL = 30 pF
(see Note A)
500
Ω
S1
Open
GND
500
Ω
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
S1
Open
2
×
VCC
GND
LOAD CIRCUIT
tw
Timing
Input
tsu
Data
Input
VCC/2
VCC
VCC/2
0V
th
VCC
VCC/2
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Output
Control
(low-level
enabling)
tPZL
VCC
Input
VCC/2
tPLH
VCC/2
0V
tPHL
VOH
Output
VCC/2
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VCC/2
VOL
Output
Waveform 2
S1 at GND
(see Note B)
Output
Waveform 1
S1 at 2
×
VCC
(see Note B)
tPZH
VCC
Input
VCC/2
VOLTAGE WAVEFORMS
PULSE DURATION
VCC/2
0V
VCC
VCC/2
VCC/2
0V
tPLZ
VCC
VCC/2
VOL + 0.15 V
VOL
tPHZ
VOH
VOH – 0.15 V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VCC/2
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,
tr
≤
2 ns, tf
≤
2 ns.
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.
Figure 2. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
9
TI [ TEXAS INSTRUMENTS ]
