UM3308 Datasheet, PDF (10/12 Pages) Union Semiconductor, Inc. – 8-Bit Bidirectional Voltage-Level Translator with Auto Direction sensing and ±15kV ESD Protection

Typical Operating Circuit
1.8V
UM3308
3.3V
1.8-V
SYSTEM
CONTROLLER
DATA
VCCA
OE
VCCB
UM3308
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
3.3-V
SYSTEM
DATA
Test Circuits
From Output
Under Test
Figure 3 Typical operating circuit
15pF
1MΩ
From Output
Under Test
50kΩ ^S1
2×VCCO
Open
15pF 50kΩ
LOAD CIRCUIT FOR MAX DATA RATE,
PULSE DURATION PROPAGATION
DELAY OUTPUT RISE AND FALL TIME
MEASUREMENT
LOAD CIRCUIT FOR
ENABLE/DISABLE
TIME MEASUREMENT
TEST
tPZL/tPLZ
tPHZ/tPZH
S1
2×VCCO
Open
Input
VCCI/2
tPLH
Output
VCCO/2
tr
VCCI/2
0.9×VCCO
0.1×VCCO
VCCI
0V
tPHL
VCCO/2
VOH
VOL
tf
Input
tw
VCCI/2
VCCI/2
VCCI
0V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR≤10MHz, ZO=50Ω,dv/dt≥1V/ns.
C. The outputs are measured one at a time, with one transition per measurement.
D. tPLH and tPHL are the same as tpd.
E. VCCI is the VCC associated with the input port.
F. VCCO is the VCC associated with the output port.
G. All parameters and waveforms are not applicable to all devices.
Figure 4 Load Circuits and Voltage Waveforms
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http://www.union-ic.com Rev.08 Apr.2014
10/12