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參數(shù)資料
| 型號： | LDHT245 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS |
| 中文描述： | 16位雙電源總線收發(fā)器可配置電壓轉換和三態(tài)輸出 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 358K |
| 代理商： | LDHT245 |
www.ti.com
PARAMETER MEASUREMENT INFORMATION
V
OH
V
OL
From Output
Under Test
C
L
(see Note A)
LOAD CIRCUIT
S1
2
×
V
CCO
Open
GND
R
L
R
L
t
PLH
t
PHL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2
×
V
CCO
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
t
PZL
t
PZH
t
PLZ
t
PHZ
V
CCA
/2
V
CCA
/2
V
CCI
/2
V
CCI
/2
V
CCI
0 V
V
CCO
/2
V
CCO
/2
V
OH
V
OL
0 V
V
CCO
/2
V
OL
+ V
TP
V
CCO
/2
V
OH
V
TP
0 V
V
CCI
0 V
V
CCI
/2
V
CCI
/2
t
w
Input
V
CCA
V
CCO
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Output
Input
t
pd
t
PLZ
/t
PZL
t
PHZ
/t
PZH
Open
2
×
V
CCO
GND
TEST
S1
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.
Waveform2 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
dv/dt
≥
1 V/ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. t
PLZ
and t
PHZ
are the same as t
dis
.
F. t
PZL
and t
PZH
are the same as t
en
.
G. t
PLH
and t
PHL
are the same as t
pd
.
H. V
CCI
is the V
CC
associated with the input port.
I. V
CCO
is the V
CC
associated with the output port.
J. All parameters and waveforms are not applicable to all devices.
10 MHz, Z
O
= 50
, dv/dt
≥
1 V/ns,
1.8 V
±
0.15 V
2.5 V
±
0.2 V
3.3 V
±
0.3 V
5 V
±
0.5 V
2 k
2 k
2 k
2 k
V
CCO
R
L
0.15 V
0.15 V
0.3 V
0.3 V
V
TP
C
L
15 pF
15 pF
15 pF
15 pF
SN74LVCH16T245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES635A–JULY 2005–REVISED AUGUST 2005
Figure 1. Load Circuit and Voltage Waveforms
8
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