參數資料
型號: 74AC11240DB
廠商: Texas Instruments, Inc.
英文描述: OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
中文描述: 八路緩沖器/線路驅動器,具有三態(tài)輸出
文件頁數: 5/6頁
文件大?。?/td> 96K
代理商: 74AC11240DB
74AC11240
OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCAS448A – MAY 1987 – REVISED APRIL 1996
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
2
×
VCC
500
500
tPHL
tPLH
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2
×
VCC
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
50% VCC
tPHZ
VCC
VCC
0 V
50% VCC
50% VCC
VOH
VOL
0 V
20% VCC
50% VCC
80% VCC
0 V
VCC
GND
Open
Input
Output
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2
×
VCC
GND
TEST
S1
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
1 MHz, ZO = 50
, tr = 3 ns, tf = 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
50% VCC
50% VCC
50% VCC
50% VCC
Figure 1. Load Circuit and Voltage Waveforms
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