參數(shù)資料
型號： SN54LS221W
廠商： Texas Instruments, Inc.
元件分類： 通用總線功能
英文描述： DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
中文描述： 雙單穩(wěn)多諧振蕩器與施密特觸發(fā)輸入
文件頁數(shù)： 11/23頁
文件大?。?/td> 621K
代理商： SN54LS221W
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
B
CLR
Q
3 V
3 V
0 V
0 V
VOH
VOL
≥
50 ns
CONDITION 4: TRIGGERING FROM POSITIVE TRANSITION OF CLR
≥
50 ns
A
CLR
Q
Q
3 V
3 V
0 V
0 V
VOH
VOH
VOL
VOL
tw
≥
60 ns
tPLH
tPHL
tPHL
tPLH
CONDITION 5: TRIGGER FROM A, THEN CLR
A
Q
Q
3 V
0 V
VOH
VOH
VOL
VOL
tw
CONDITION 6: TRIGGER FROM A
tw
A is low.
B and CLR are high.
NOTES: A. Input pulses are supplied by generators having the following characteristics: PRR
≤
1 MHz, ZO
≈
50
; for SN54/74221, tr
≤
7 ns,
tf
≤
7 ns, for SN54/74LS221, tr
≤
15 ns, tf
≤
6 ns.
B. All measurements are made between the 1.5-V points of the indicated transitions for the SN54/74221 or between the 1.3-V points
for the SN54/74LS221.
Figure 1. Switching Characteristics (Continued)
相關(guān)PDF資料
PDF描述
SN74LS221DB DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54221W DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN74LS221 500mA, 8V,±2% Tolerance, Voltage Regulator, Ta = 0°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Tape and Reel; Qty per Container: 2500
SN74LS221D 500mA, 8V,±4% Tolerance, Voltage Regulator, Ta = -40°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Rail; Qty per Container: 75
SN74LS221N MiniPak PIN switch diode
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