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参数资料
| 型号： | SN74AS867DWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 计数器 |
| 英文描述： | AS SERIES, SYN POSITIVE EDGE TRIGGERED 8-BIT BIDIRECTIONAL BINARY COUNTER, PDSO24 |
| 封装： | PLASTIC, SO-24 |
| 文件页数： | 22/24页 |
| 文件大小： | 508K |
| 代理商： | SN74AS867DWR |
SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
typical clear, preset, count, and inhibit sequences
The following sequence is illustrated below:
1.
Clear outputs to zero (SN74ALS867A and
′AS867 are asynchronous;
SN74ALS869 and
′AS869 are synchronous.)
2.
Preset to binary 252
3.
Count up to 253, 254, 255, 0, 1, and 2
4.
Count down to 1, 0, 255, 254, 253, and 252
5.
Inhibit
C
Async
Clear
D
E
F
CLK
ENP
ENT
QA
QB
QC
QD
RCO
Data
Inputs
Outputs
QE
QF
QG
QH
Count Down
G
H
B
A
S1
S0
Preset
Sync
Clear
252 253
255
254
255 254 253 252
01
21
0
Count Up
Inhibit
ENT and ENP both must be low for counting to occur.
相关PDF资料 |
PDF描述 |
|---|---|
| SN74AS867DW | AS SERIES, SYN POSITIVE EDGE TRIGGERED 8-BIT BIDIRECTIONAL BINARY COUNTER, PDSO24 |
| SN74ALS86N3 | ALS SERIES, QUAD 2-INPUT XOR GATE, PDIP14 |
| SN74AS86AN | AS SERIES, QUAD 2-INPUT XOR GATE, PDIP14 |
| SN74ALS873BDW | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO24 |
| SN74ALS873BNT3 | ALS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74AS867DWRE4 | 功能描述:计数器 IC Synch 8-Bit Up/Down Counter RoHS:否 制造商:NXP Semiconductors 计数器类型:Binary Counters 逻辑系列:74LV 位数:10 计数法: 计数顺序: 工作电源电压:1 V to 5.5 V 工作温度范围:- 40 C to + 125 C 封装 / 箱体:SOT-109 封装:Reel |
| SN74AS867DWRG4 | 功能描述:计数器 IC Synch 8B Up DWN Counters RoHS:否 制造商:NXP Semiconductors 计数器类型:Binary Counters 逻辑系列:74LV 位数:10 计数法: 计数顺序: 工作电源电压:1 V to 5.5 V 工作温度范围:- 40 C to + 125 C 封装 / 箱体:SOT-109 封装:Reel |
| SN74AS867FN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74AS867NT | 功能描述:计数器 IC Synch 8-Bit Up/Down Counter RoHS:否 制造商:NXP Semiconductors 计数器类型:Binary Counters 逻辑系列:74LV 位数:10 计数法: 计数顺序: 工作电源电压:1 V to 5.5 V 工作温度范围:- 40 C to + 125 C 封装 / 箱体:SOT-109 封装:Reel |
| SN74AS867NTE4 | 功能描述:计数器 IC Synch 8-Bit Up/Down Counter RoHS:否 制造商:NXP Semiconductors 计数器类型:Binary Counters 逻辑系列:74LV 位数:10 计数法: 计数顺序: 工作电源电压:1 V to 5.5 V 工作温度范围:- 40 C to + 125 C 封装 / 箱体:SOT-109 封装:Reel |
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