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參數(shù)資料
| 型號： | SN54ABT16862 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 20 Bit Bus Transceivers With 3-State Outputs(20位總線收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 20位總線收發(fā)器與3態(tài)輸出（20位總線收發(fā)器（三態(tài)輸出）） |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 90K |
| 代理商： | SN54ABT16862 |
SN54ABT16862, SN74ABT16862
20-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS456 – OCTOBER 1992
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
4
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, C
L
= 50 pF (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
VCC = 5 V,
TA = 25
°
C
MIN
SN54ABT16862
SN74ABT16862
PARAMETER
(OUTPUT)
UNIT
TYP
MAX
MIN
MAX
MIN
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A or B
B or A
ns
OEAB or OEBA
B or A
ns
OEAB or OEBA
B or A
ns
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT FOR OUTPUTS
S1
7 V
Open
GND
500
500
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
7 V
Open
tPLH
tPHL
Output
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 7 V
(see Note C)
Output
Waveform 2
S1 at Open
(see Note C)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
1.5 V
1.5 V
1.5 V
1.5 V
3.5 V
3 V
0 V
1.5 V
1.5 V
VOH
VOL
0 V
1.5 V
VOL + 0.3 V
1.5 V
VOH – 0.3 V
≈
0 V
3 V
Input
(see Note B)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR
≤
10 MHz, Zo = 50
, tr
≤
2.5 ns, tf
≤
2.5 ns.
C. 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.
D. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
P
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