SN74CBTS6800 Datasheet, PDF (3/4 Pages) Texas Instruments – 10-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS AND SCHOTTKY DIODE CLAMPING

SN74CBTS6800
10-BIT FET BUS SWITCH
WITH PRECHARGED OUTPUTS AND SCHOTTKY DIODE CLAMPING
SCDS102A – JUNE 1999 – REVISED JULY 1999
switching characteristics over recommended operating free-air temperature range, C_L = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
TEST
CONDITIONS
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4 V
MIN MAX
VCC = 5 V
± 0.5 V
MIN MAX
UNIT
tpd†
A or B
B or A
0.35
0.25 ns
tPZH
BIASV = GND
ON
tPZL
BIASV = 3 V
A or B
6
2 5.1
ns
6
2 5.6
tPHZ
BIASV = GND
ON
tPLZ
BIASV = 3 V
A or B
5.5
1
5
ns
5.5
2 5.9
† _{The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when}
driven by an ideal voltage source (zero output impedance).
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
500 Ω
500 Ω
7V
S1
Open
GND
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
S1
Open
7V
Open
LOAD CIRCUIT
Output
Control
(low-level
enabling)
1.5 V
3V
1.5 V
0V
Input
1.5 V
3V
1.5 V
0V
tPLH
Output
1.5 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
tPHL
1.5 V
VOH
VOL
Output
Waveform 1
S1 at 7 V
(see Note B)
tPZL
Output
Waveform 2
S1 at Open
(see Note B)
tPZH
1.5 V
1.5 V
tPLZ
3.5 V
VOL + 0.3 V
VOL
tPHZ
VOH
VOH – 0.3 V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
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 ≤ 2.5 ns, tf ≤ 2.5 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 1. Load Circuit and Voltage Waveforms
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