- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371060 > MC74F299 (Motorola, Inc.) 8-INPUT UNIVERSAL SHIFT/STORAGE REGISTER WITH COMMON PARALLEL I/O PINS PDF資料下載
參數(shù)資料
| 型號： | MC74F299 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-INPUT UNIVERSAL SHIFT/STORAGE REGISTER WITH COMMON PARALLEL I/O PINS |
| 中文描述： | 8輸入通用移位/存儲通用并行I / O引腳注冊 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 176K |
| 代理商： | MC74F299 |
4-243
FAST AND LS TTL DATA
MC74F299
FUNCTION TABLE
Inputs
MR
S1
X
H
L
H
L
S0
X
H
H
L
L
CP
Response
L
H
H
H
H
X
↑
↑
↑
X
Asynchronous Reset: Q0–Q7 = LOW
Parallel Load: I/On
o
Qn
Shift Right: DS0
o
Q0, Q0
o
Q1, etc.
Shift Left: DS7
o
Q7, Q7
o
Q6, etc.
Hold
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
↑
= LOW-to-HIGH clock transition.
FUNCTIONAL DESCRIPTION
The MC74F299 is an 8-bit universal shift/storage register
with 3-state outputs. Four modes of operation are possible:
hold (store), shift left, shift right and load data. The parallel load
inputs and flip-flop outputs are multiplexed to reduce the total
number of package pins. Additional outputs are provided for
flip-flops Q0 and Q7 to allow easy serial cascading. A separate
active-LOW Master Reset is used to reset the register.
The MC74F299 contains eight edge-triggered D-type
flip-flops and the interstage logic necessary to perform
synchronous shift left, shift right, parallel load and hold
operations. The type of operation is determined by S0 and S1,
as shown in the Function Table. All flip-flop outputs are
brought out through 3-state buffers to separate I/O pins that
also serve as data inputs in the parallel load mode. Q0 and Q7
are also brought out on other pins for expansion in serial
shifting of longer words.
A LOW signal on MR overrides the Select and CP inputs
and resets the flip-flops. All other state changes are initiated
by the rising edge of the clock. Inputs can change when the
clock is in either state provided only that the recommended
set-up and hold times, relative to the rising edge of CP, are
observed.
A HIGH signal on either OE1 or OE2 disables the 3-state
buffers and puts the I/O pins in the high impedance state. In
this condition the shift, hold, load and reset operations can still
occur. The 3-state buffers are also disabled by HIGH signals
on both S0 and S1 in preparation for a parallel load operation.
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(Unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
VIH
VIL
VIK
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
Input Clamp Diode Voltage
–1.2
V
VCC = MIN, IIN = –18 mA
VOH
Output HIGH Voltage
Q0/Q7
74
2.5
V
IOH = –1.0 mA
VCC = 4.5 V
VCC = 4.75 V
VCC = 4.75 V
VCC = 4.5 V
74
2.7
I/O
74
2.7
3.4
V
IOH = –3.0 mA
74
2.4
VOL
Output LOW Voltage
Q0/Q7
I/O
0.5
V
IOL = 20 mA
IOL = 24 mA
VCC = MIN
0.5
IIH
Input HIGH Current
Q0/Q7
I/O
20
μ
A
VCC = MAX, VIN = 2.7 V
70
Q0/Q7
I/O
0.1
mA
VCC = MAX
VIN = 7.0 V
VIN = 5.5 V
1.0
IIL
Input LOW Current
S0, S1
Other Inputs
–1.2
mA
VCC = MAX, VIN = 0.5 V
–0.6
IOZH
Off-State Output Current,
High-Level Voltage Applied
70
μ
A
mA
VCC = MAX
VOUT = 2.7 V
VOUT = 5.5 V
1.0
IOZL
Off-State Output Current,
Low-Level Voltage Applied
–0.6
mA
VCC = MAX, VOUT = 0.5 V
IOS
ICC
NOTES:
1. For conditions shown as MIN or MAX, use appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at one time, nor for more than 1 second.
Output Short Circuit Current (Note 2)
–60
–150
mA
VCC = MAX
VOUT = 0 V
OE = HIGH, CP = HIGH
Total Supply Current
95
mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC74F323J | 8-INPUT SHIFT/STORAGE REGISTER WITH SYNCHRONOUS RESET AND COMMON I/O PINS |
| MC74F323DW | Processor Supervisory Circuits 5-SOT-23 -40 to 85 |
| MC74F323N | Processor Supervisory Circuits 5-SOT-23 -40 to 85 |
| MC74F32D | QUAD 2-INPUT OR GATE FAST SCHOTTKY TTL |
| MC74F32 | QUAD 2-INPUT OR GATE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC74F299 WAF | 制造商:ON Semiconductor 功能描述: |
| MC74F299DW | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74F299N | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Motorola 功能描述:74F299N 制造商:ON Semiconductor 功能描述: |
| MC74F32D | 制造商:Motorola Inc 功能描述: 制造商:MAJOR 功能描述: 制造商:ON Semiconductor 功能描述: |
| MC74F32DR2 | 制造商:Motorola Inc 功能描述: 制造商:Motorola Inc 功能描述:F/FAST SERIES, QUAD 2-INPUT OR GATE, PDSO14 |
發(fā)布緊急采購，3分鐘左右您將得到回復。