SN74LVCC4245A_08 Datasheet, PDF (8/17 Pages) Texas Instruments – OCTAL DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE OUTPUT VOLTAGE AND 3-STATE OUTPUTS

SN74LVCC4245A
OCTAL DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE OUTPUT VOLTAGE AND 3-STATE OUTPUTS
SCAS584M – NOVEMBER 1996 – REVISED MARCH 2005
PARAMETER MEASUREMENT INFORMATION FOR B TO A
V_CCA = 4.5 V to 5.5 V AND V_CCB = 2.7 V TO 3.6 V
From Output
Under Test
C_L = 50 pF
(see Note A)
500 Ω ^S1
500 Ω
2 × V_CCA
Open
GND
TEST
t_PLH/t_PHL
t_PLZ/t_PZL
t_PHZ/t_PZH
S1
Open
2 × V_CCA
GND
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LOAD CIRCUIT
Input
t_w
3V
1.5 V
1.5 V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
Input
Output
3V
1.5 V
1.5 V
0V
t_PLH
t_PHL
1.5 V
V_OH
1.5 V
V_OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
NONINVERTING OUTPUTS
Output
Control
3V
1.5 V
1.5 V
0V
t_PZL
Output
Waveform 1
S1 at 2 × V_CCA
(see Note B)
t_PZH
Output
Waveform 2
S1 at GND
(see Note B)
1.5 V
1.5 V
t_PLZ
V_CCA
V_OL + 0.3 V _VOL
t_PHZ
V_OH
V_OH - 0.3 V
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. C_L 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, Z_O = 50 Ω, t_r ≤ 2.5 ns, t_f ≤ 2.5 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 3. Load Circuit and Voltage Waveforms
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