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參數(shù)資料
| 型號(hào)： | SN54ALS374AFK |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路D型沿觸發(fā)器與觸發(fā)器3態(tài)輸出 |
| 文件頁數(shù)： | 8/9頁 |
| 文件大?。?/td> | 125K |
| 代理商： | SN54ALS374AFK |
SN54ALS374A, SN54AS374, SN74ALS374A, SN74AS374
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SDAS167C – APRIL 1982 – REVISED NOVEMBER 1999
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
tPHZ
tPLZ
tPHL
tPLH
tPZL
tPZH
tPLH
tPHL
LOAD CIRCUIT FOR
3-STATE OUTPUTS
From Output
Under Test
CL = 50 pF
(see Note A)
Test
Point
S1
7 V
3.5 V
3.5 V
0.3 V
0.3 V
th
tsu
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Timing
Input
Data
Input
3.5 V
3.5 V
0.3 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
tw
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
Out-of-Phase
Output
(see Note C)
3.5 V
3.5 V
0.3 V
0.3 V
VOL
VOH
VOH
VOL
Output
Control
Waveform 1
S1 Closed
(see Note B)
Waveform 2
S1 Open
(see Note B)
≈
0 V
VOH
VOL
≈
3.5 V
In-Phase
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
VCC
Test
Point
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT FOR
OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT FOR
BI-STATE TOTEM-POLE OUTPUTS
From Output
Under Test
Test
Point
CL = 50 pF
(see Note A)
500
500
500
500
VOL + 0.3 V
VOH – 0.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR
≤
1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 3. Load Circuits and Voltage Waveforms
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| SN54AS574FK | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
| SN54AS574W | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
| SN54AS575FK | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
| SN54ALS574BW | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
| SN54AS575W | OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS |
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