CD54ACT191F3A

更新时间： 2024-11-27 00:00:55

品牌	Logo	应用领域
德州仪器 - TI		计数器
页数	文件大小	规格书
11页	60K
描述
Presettable Synchronous 4-Bit Binary Up/Down Counter

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CD54ACT191F3A 数据手册

CD54AC191,

CD54ACT191

Data sheet acquired from Harris Semiconductor

SCHS243A

Presettable Synchronous 4-Bit Binary

Up/Down Counter

October 1998 - Revised May 2000

Features

Description

• Buffered Inputs

The CD54AC191 and CD54ACT191 are asynchronously

presettable binary up/down synchronous counters that utilize

Advanced CMOS Logic technology. Presetting the counter to

the number on preset data inputs (P0-P3) is accomplished

by setting LOW the asynchronous parallel load input (PL).

Counting occurs when PL is HIGH, Count Enable (CE) is

LOW, and the Up/Down (U/D) input is either LOW for up-

counting or HIGH for down-counting. The counter is incre-

mented or decremented synchronously with the LOW-to-

HIGH transition of the clock.

• Typical Propagation Delay

- 12.8ns at V

= 5V, T = 25 C, C = 50pF

A L

• Exceeds 2kV ESD Protection MIL-STD-883, Method

3015

• SCR-Latchup-Resistant CMOS Process and Circuit

Design

• Speed of Bipolar FAST™/AS/S with Signiﬁcantly

Reduced Power Consumption

When an overﬂow or underﬂow of the counter occurs, the

Terminal Count (TC) output, which is LOW during counting,

goes HIGH and remains HIGH for one clock cycle. This out-

put can be used for look-ahead carry in high-speed cascad-

ing (see Figure 12). The TC output also initiates the Ripple

Clock (RC) output which, normally HIGH, goes LOW and

remains LOW for the low-level cascaded using the Ripple

Count output.

• Balanced Propagation Delays

• AC Types Feature 1.5V to 5.5V Operation and

Balanced Noise Immunity at 30% of the Supply

• ±24mA Output Drive Current

- Fanout to 15 FAST™ ICs

- Drives 50Ω Transmission Lines

Ordering Information

Pinout

PART

NUMBER

TEMP.

CD54AC191, CD54ACT191

(CERDIP)

RANGE ( C)

-55 to 125

PACKAGE

16 Ld CERDIP

TOP VIEW

CD54AC191F3A

CD54ACT191F3A

NOTES:

16 V

15 P0

14 CP

13 RC

12 TC

11 PL

10 P2

1. When ordering, use the entire part number. Add the suffix 96 to

obtain the variant in the tape and reel.

2. Wafer and die for this part number is available which meets all elec-

trical specifications. Please contact your local TI sales office or cus-

tomer service for ordering information.

U/D

GND

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

FAST™ is a Trademark of Fairchild Semiconductor.

12 3 4 5 6 7...11

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与CD54ACT191F3A相关器件

型号	品牌	获取价格	描述	数据表
CD54ACT193	INTERSIL	获取价格	Presettable Synchronous 4-Bit Binary Up/Down Counter with Reset
CD54ACT1933A	INTERSIL	获取价格	Presettable Synchronous 4-Bit Binary Up/Down Counter with Reset
CD54ACT193F3A	RENESAS	获取价格	Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, CM
CD54ACT193H	TI	获取价格	ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, UUC, DIE
CD54ACT193H	GE	获取价格	Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, CM
CD54ACT193HX	GE	获取价格	Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, CM
CD54ACT20	TI	获取价格	Dual 4-Input NAND Gate
CD54ACT20E	ETC	获取价格	Logic IC
CD54ACT20EN	ETC	获取价格	Logic IC
CD54ACT20F	ETC	获取价格	Logic IC

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