SN74VMEH22501A-EP Datasheet, PDF (13/27 Pages) Texas Instruments – 8-BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1-BIT BUS TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3-STATE OUTPUTS

SN74VMEH22501AĆEP
8ĆBIT UNIVERSAL BUS TRANSCEIVER AND TWO 1ĆBIT BUS TRANSCEIVERS
WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3ĆSTATE OUTPUTS
SCES625 − FEBRUARY 2005
PARAMETER MEASUREMENT INFORMATION
B PORT
From Output
Under Test
CL = 50 pF
(see Note A)
500 Ω ^S1
500 Ω
6V
Open
GND
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
A-to-B Skew
S1
Open
6V
GND
Open
Timing
Input
Data
Input
LOAD CIRCUIT
3V
1.5 V
0V
tsu
th
1.5 V
3V
1.5 V
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Input
1.5 V
3V
1.5 V
0V
tPLH
tPHL
Output
VCC/2
VOH
VCC/2
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Input
tw
1.5 V
3V
1.5 V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
Output Control
3V
1.5 V
1.5 V
0V
tPZL
Output
Waveform 1
S1 at 6 V
(see Note B)
VCC/2
tPLZ
3V
VOL + 0.3 V
VOL
tPZH
tPHZ
Output
Waveform 2
S1 at GND
(see Note B)
VCC/2
VOH
VOH − 0.3 V
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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.
Figure 2. Load Circuit and Voltage Waveforms
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