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参数资料
| 型号： | SN74HC193IPWRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 计数器 |
| 英文描述： | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16 |
| 封装： | PLASTIC, TSSOP-16 |
| 文件页数： | 1/12页 |
| 文件大小： | 243K |
| 代理商： | SN74HC193IPWRQ1 |
SN74HC193Q1
4BIT SYNCHRONOUS UP/DOWN COUNTER
(DUAL CLOCK WITH CLEAR)
SCLS594A NOVEMBER 2004 REVISED APRIL 2008
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-A Max ICC
D Typical tpd = 20 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 A Max
D Look-Ahead Circuitry Enhances Cascaded
Counters
D Fully Synchronous in Count Modes
D Parallel Asynchronous Load for Modulo-N
Count Lengths
D Asynchronous Clear
description/ordering information
The SN74HC193 device is a 4-bit synchronous,
reversible, up/down binary counter. Synchronous
operation is provided by having all flip-flops clocked
simultaneously
so
that
the
outputs
change
simultaneously with each other when dictated by the
steering logic. This mode of operation eliminates the
output counting spikes normally associated with
asynchronous (ripple-clock) counters.
The outputs of the four flip-flops are triggered on a low-to-high-level transition of either count (clock) input (UP
or DOWN). The direction of counting is determined by which count input is pulsed while the other count input
is high.
All four counters are fully programmable; that is, each output may be preset to either level by placing a low on
the load (LOAD) input and entering the desired data at the data inputs. The output changes to agree with the
data inputs independently of the count pulses. This feature allows the counters to be used as modulo-N dividers
simply by modifying the count length with the preset inputs.
A clear (CLR) input has been provided that forces all outputs to the low level when a high level is applied. The
clear function is independent of the count and LOAD inputs.
This counter was designed to be cascaded without the need for external circuitry. The borrow (BO) output
produces a low-level pulse while the count is zero (all outputs low) and DOWN is low. Similarly, the carry (CO)
output produces a low-level pulse while the count is maximum (9 or 15), and UP is low. The counter then can
be cascaded easily by feeding BO and CO to DOWN and UP, respectively, of the succeeding counter.
ORDERING INFORMATION{
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
40
°C to 125°C
TSSOP PW
Reel of 2000
SN74HC193QPWRQ1
HC193Q
40
°C to 85°C
TSSOP PW
Reel of 2000
SN74HC193IPWRQ1
HC193I
For the most current package and ordering information, see the Package Option Addendum at the end of
this document, or see the TI web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
B
QB
QA
DOWN
UP
QC
QD
GND
VCC
A
CLR
BO
CO
LOAD
C
D
PW PACKAGE
(TOP VIEW)
Copyright
2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74HC193N | 功能描述:计数器 IC 4-Bit Sync UpDn Bnry 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 |
| SN74HC193N | 制造商:Texas Instruments 功能描述:Counter / Multiplier / Divider Logic IC |
| SN74HC193NE4 | 功能描述:计数器 IC 4-Bit Sync Up/Down 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 |
| SN74HC193NS | 制造商:Texas Instruments 功能描述: |
| SN74HC193NSR | 功能描述:计数器 IC 4-Bit Sync UpDn Bnry 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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