SN74HC161D

SN74HC161D, 4-BIT SYNCHRONOUS BINARY COUNTER, SOIC, 0.5 V to 7 V, ±20 mA

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Price:: US $0.16~0.16 / piece [Get Latest Price]

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PartNumber:: SN74HC161D

Brand:: Texas Instruments - TI | Pack: SOIC | D/C: 11+

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Products Upload time: 2012-08-13

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Part Number:SN74HC161D
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Product Summary

The SN74HC161D is a 4-bit synchronous binary counter. The SN74HC161D features an internal carry look-ahead for application in high-speed counting designs. The SN74HC161D is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.

Parametrics

SN74HC161D absolute maximum ratings: (1)Supply voltage range, VCC: 0.5 V to 7 V; (2)Input clamp current, IIK (VI＜0 or VI＞VCC): ±20 mA; (3)Output clamp current, IOK (VO ＜ 0 or VO ＞ VCC): ±20 mA; (4)Continuous output current, IO (VO = 0 to VCC): ±25 mA; (5)Continuous current through VCC or GND: ±50 mA; (6)Package thermal impedance, θJA: D package: 73℃/W; (7)N package: 67℃/W; (8)NS package: 64℃/W; (9)PW package: 108℃/W; (10)Storage temperature range, Tstg: 65℃ to 150℃.

Features

SN74HC161D features: (1)Wide Operating Voltage Range of 2 V to 6 V; (2)Outputs Can Drive Up To 10 LSTTL Loads; (3)Low Power Consumption, 80-μA Max ICC; (4)Typical tpd = 14 ns; (5)±4-mA Output Drive at 5 V Low Input Current of 1 μA Max; (6)Internal Look-Ahead for Fast Counting; (7)Carry Output for n-Bit Cascading; (8)Synchronous Counting; (9)Synchronously Programmable.