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參數(shù)資料
| 型號： | CY74FCT191T |
| 元件分類： | 計數(shù)器 |
| 英文描述： | Presettable Synchronous 4-Bit Up/Down Binary Counters |
| 中文描述： | 可預(yù)置同步4位向上/向下二進制計數(shù)器 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 102K |
| 代理商： | CY74FCT191T |
CY74FCT823T
9-BIT BUS-INTERFACE REGISTER
SCCS069
–
OCTOBER 2001
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
3 V
3 V
0 V
0 V
th
tsu
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Data Input
tPLH
tPHL
tPHL
tPLH
VOH
VOH
VOL
VOL
3 V
0 V
Input
Out-of-Phase
Output
In-Phase
Output
Timing Input
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Control
Output
Waveform 1
(see Note B)
Output
Waveform 2
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
≈
3.5 V
0 V
VOL
+ 0.3 V
≈
0 V
3 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
7 V
Open
TEST
S1
3 V
0 V
tw
VOLTAGE WAVEFORMS
PULSE DURATION
Input
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. The outputs are measured one at a time with one input transition per measurement.
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT FOR
3-STATE OUTPUTS
S1
7 V
500
GND
From Output
Under Test
CL = 50 pF
(see Note A)
Test
Point
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Open
VOH
–
0.3 V
500
500
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
Figure 1. Load Circuit and Voltage Waveforms
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY74FCT191TQSOP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-Bit Up/Down Binary Counter |
| CY74FCT191TSOIC | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-Bit Up/Down Binary Counter |
| CY74FCT2240ATQC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY74FCT2240ATQCT | 功能描述:緩沖器和線路驅(qū)動器 Octal Buffer/Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| CY74FCT2240ATQCTE4 | 功能描述:緩沖器和線路驅(qū)動器 16-Bit Edg-Trig D-Ty F-F W/3-State Otpt RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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