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參數資料
| 型號： | 74S225 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16 】 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY WITH 3-STATE OUTPUTS |
| 中文描述： | 16】5異步先入先出3記憶態輸出 |
| 文件頁數： | 7/10頁 |
| 文件大小： | 145K |
| 代理商： | 74S225 |
SN74S225
16
×
5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY
WITH 3-STATE OUTPUTS
SDLS207B – SEPTEMBER 1976 – REVISED APRIL 1998
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
tPHZ
tPLZ
0.3 V
tPZL
tPZH
LOAD CIRCUIT FOR 3-STATE OUTPUTS
From Output
Under Test
Test Point
R1 = 500
S1
CL
(see Note A)
7 V
Open
1.3 V
1.3 V
1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
th
tsu
VOLTAGE WAVEFORMS
SET UP AND HOLD TIMES
Timing
Input
Data
Input
1.3 V
1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
VOLTAGE WAVEFORMS
PULSE DURATION
1.3 V
1.3 V
1.3 V
1.3 V
3.5 V
0.3 V
Output
Control
Waveform 1
S1 Closed
(see Note B)
Waveform 2
S1 Open
(see Note B)
0 V
VOH
VOL
3.5 V
0.3 V
1.3 V
1.3 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
R2 = 500
tw
tPZH
tPZL
tPHZ
tPLZ
tPLH
tPHL
Open
Closed
Open
Closed
Open
Open
PARAMETER
S1
ten
tdis
tpd
tPHL
tPLH
tPLH
tPHL
Input
(see Note C)
Out-of-Phase
Output
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
3.5 V
0.3 V
VOL
VOH
VOH
VOL
In-Phase
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
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
≤
2 ns, tf
≤
2 ns.
D. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
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相關代理商/技術參數 |
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| 74S225AJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x5 Asynchronous FIFO |
| 74S225AN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x5 Asynchronous FIFO |
| 74S225J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x5 Asynchronous FIFO |
| 74S225N | 制造商:SNT 功能描述: 制造商:North American Philips Discrete Products Div 功能描述:FIFO, 16 x 5, Asynchronous, 20 Pin, Plastic, DIP 制造商:NXP Semiconductors 功能描述:FIFO, 16 x 5, Asynchronous, 20 Pin, Plastic, DIP 制造商:Texas Instruments 功能描述:FIFO, 16 x 5, Asynchronous, 20 Pin, Plastic, DIP |
| 74S226J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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