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CD54HCT299

更新时间： 2024-11-23 21:59:31
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德州仪器 - TI 移位寄存器
页数 文件大小 规格书
13页 275K
描述
High-Speed CMOS Logic 8-Bit Universal Shift Register; Three-State

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CD54HCT299 数据手册

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CD54HC299, CD74HC299,  
CD54HCT299, CD74HCT299  
Data sheet acquired from Harris Semiconductor  
SCHS178C  
High-Speed CMOS Logic  
8-Bit Universal Shift Register; Three-State  
January 1998 - Revised May 2003  
Features  
Description  
The ’HC259 and ’HCT299 are 8-bit shift/storage registers  
with three-state bus interface capability. The register has four  
synchronous-operating modes controlled by the two select  
inputs as shown in the mode select (S0, S1) table. The mode  
• Buffered Inputs  
• Four Operating Modes: Shift Left, Shift Right, Load  
and Store  
[ /Title  
(CD74  
HC299  
,
CD74  
HCT29  
9)  
select, the serial data (DS0, DS7) and the parallel data (I/O  
0
• Can be Cascaded for N-Bit Word Lengths  
- I/O ) respond only to the low-to-high transition of the clock  
7
(CP) pulse. S0, S1 and data inputs must be stable one set-  
up time prior to the clock positive transition.  
• I/O - I/O Bus Drive Capability and Three-State for  
0
7
Bus Oriented Applications  
o
The Master Reset (MR) is an asynchronous active low input.  
When MR output is low, the register is cleared regardless of  
the status of all other inputs. The register can be expanded  
by cascading same units by tying the serial output (Q0) to  
• Typical f = 50MHz at V  
= 5V, C = 15pF, T = 25 C  
MAX CC  
L
A
• Fanout (Over Temperature Range)  
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
/Sub-  
ject  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads the serial data (DS7) input of the preceding register, and  
tying the serial output (Q7) to the serial data (DS0) input of  
(High  
Speed  
CMOS  
Logic  
8-Bit  
Uni-  
o
o
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
the following register. Recirculating the (n x 8) bits is  
accomplished by tying the Q7 of the last stage to the DS0 of  
the first stage.  
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
The three-state input/output I(/O) port has three modes of  
operation:  
• HC Types  
1. Both output enable (OE1 and OE2) inputs are low and S0  
or S1 or both are low, the data in the register is presented  
at the eight outputs.  
- 2V to 6V Operation  
versal  
Shift  
- High Noise Immunity: N = 30%, N = 30% of V  
IL IH CC  
at V  
= 5V  
CC  
2. When both S0 and S1 are high, I/O terminals are in the  
high impedance state but being input ports, ready for par-  
allel data to be loaded into eight registers with one clock  
transition regardless of the status of OE1 and OE2.  
• HCT Types  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
V = 0.8V (Max), V = 2V (Min)  
IL IH  
3. Either one of the two output enable inputs being high will  
force I/O terminals to be in the off-state. It is noted that  
each I/O terminal is a three-state output and a CMOS  
buffer input.  
- CMOS Input Compatibility, I ≤ 1µA at V , V  
l
OL OH  
Pinout  
Ordering Information  
CD54HC299, CD54HCT299  
(CERDIP)  
CD74HC299, CD74HCT299  
(PDIP, SOIC)  
o
PART NUMBER  
CD54HC299F3A  
CD54HCT299F3A  
CD74HC299E  
TEMP. RANGE ( C)  
-55 to 125  
PACKAGE  
20 Ld CERDIP  
20 Ld CERDIP  
20 Ld PDIP  
20 Ld SOIC  
20 Ld SOIC  
20 Ld PDIP  
20 Ld SOIC  
20 Ld SOIC  
TOP VIEW  
-55 to 125  
1
2
3
4
5
6
7
8
9
V
S0  
OE1  
OE2  
20  
19  
CC  
-55 to 125  
S1  
CD74HC299M  
-55 to 125  
18 DS7  
17 Q7  
CD74HC299M96  
CD74HCT299E  
CD74HCT299M  
CD74HCT299M96  
-55 to 125  
I/O  
6
I/O  
4
16 I/O  
7
-55 to 125  
I/O  
2
15 I/O  
5
-55 to 125  
I/O  
0
14 I/O  
3
-55 to 125  
Q0  
13 I/O  
12  
1
NOTE: When ordering, use the entire part number. The suffix 96  
denotes tape and reel.  
MR  
CP  
GND 10  
11 DS0  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
Copyright © 2003, Texas Instruments Incorporated  
1
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CD54HCT299 替代型号

型号 品牌 替代类型 描述 数据表
CD74HCT299 TI

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