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SN74AS869DWRG4

SN74AS869DWRG4
Mfr. #:
SN74AS869DWRG4
描述:
Counter ICs Synch 8B Up DWN Counters
生命週期:
製造商新產品
數據表:
SN74AS869DWRG4 數據表
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ECAD Model:
更多信息:
SN74AS869DWRG4 更多信息 SN74AS869DWRG4 Product Details
產品屬性
屬性值
製造商：
德州儀器
產品分類：
計數器 IC
RoHS：
Y
安裝方式：
貼片/貼片
包裝/案例：
SOIC-24
計數器類型：
二進制
邏輯系列：
TTL
位數：
8
計數方法：
同步
計數順序：
上/下
工作電源電壓：
4.5 V to 5.5 V
打包：
捲軸
品牌：
德州儀器
產品類別：
計數器 IC
出廠包裝數量：
1
子類別：
計數器 IC
單位重量：
0.038731 oz
Tags
SN74AS869DWR, SN74AS869D, SN74AS869, SN74AS86, SN74AS8, SN74AS, SN74A, SN74, SN7
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Step1: Vacuum Packaging with PL
Step1:
Vacuum Packaging with PL
Step2: Anti-Static Bag
Step2:
Anti-Static Bag
Step3: Packaging Boxes
Step3:
Packaging Boxes
***i-Key
IC COUNTER BINARY 8BIT 24SOIC
***ark
Counter Logic IC; Logic Family:AS; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Package/Case:24-SOIC; No. of Pins:24; Operating Temperature Range:0°C to +70°C; Input Type:TTL; Leaded Process Compatible:Yes; Output Type:TTL ;RoHS Compliant: Yes
***as Instruments
These synchronous, presettable, 8-bit up/down counters feature internal-carry look-ahead circuitry for cascading in high-speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincidentally with each other when so instructed by the count-enable (,) inputs and internal gating. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the eight flip-flops on the rising (positive-going) edge of the clock waveform. These counters are fully programmable; they may be preset to any number between 0 and 255. The load-input circuitry allows parallel loading of the cascaded counters. Because loading is synchronous, selecting the load mode disables the counter and causes the outputs to agree with the data inputs after the next clock pulse. The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating. Two count-enable (and ) inputs and a ripple-carry () output are instrumental in accomplishing this function. Both and must be low to count. The direction of the count is determined by the levels of the select (S0, S1) inputs as shown in the function table. is fed forward to enable . thus enabled produces a low-level pulse while the count is zero (all outputs low) counting down or 255 counting up (all outputs high). This low-level overflow-carry pulse can be used to enable successive cascaded stages. Transitions at and are allowed regardless of the level of CLK. All inputs are diode clamped to minimize transmission-line effects, thereby simplifying system design. These counters feature a fully independent clock circuit. With the exception of the asynchronous clear on the SN74ALS867A and ´AS867, changes at S0 and S1 that modify the operating mode have no effect on the Q outputs until clocking occurs. For the ´AS867 and ´AS869, any time ENP\ and/or ENT\ is taken high, either goes or remains high. For the SN74ALS867A and SN74ALS869, any time is taken high, either goes or remains high. The function of the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the stable setup and hold times. The SN54AS867 and SN54AS869 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS867A, SN74ALS869, SN74AS867, and SN74AS869 are characterized for operation from 0°C to 70°C.
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Mfr.#: SN74AS823ADWRG4

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Mfr.#: SN74AS851AN

OMO.#: OMO-SN74AS851AN-1190

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Mfr.#: SN74AS876NT

OMO.#: OMO-SN74AS876NT-TEXAS-INSTRUMENTS

 Flip Flops Dual 4-Bit D-Type Edge-Trgrd Flip-Flop
可用性
庫存:
Available
訂購:
3500
輸入數量:
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