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HD74HC299のメーカーはHitachi Semiconductorです、この部品の機能は「8-bit Universal Shift/Storage Register (with 3-state outputs)」です。 |
部品番号 | HD74HC299 |
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部品説明 | 8-bit Universal Shift/Storage Register (with 3-state outputs) | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD74HC299ダウンロード(pdfファイル)リンクがあります。 Total 11 pages
HD74HC299
8-bit Universal Shift/Storage Register (with 3-state outputs)
Description
The HD74HC299 features multiplexed inputs/outputs to achieve full 8-bit data handling in a single 20-pin
package. Due to the large output drive capability and 3-state feature, this device is ideally suited for
interfacing with bus lines in a bus oriented system. Two function select inputs and two output control
inputs are used to choose the mode of operation as listed in the function table. Synchronous parallel
loading is accomplished by taking both function select lines S0 and S1 high. This places the 3-state outputs
in a high impedance state, which permits data applied to the input/output lines to be clocked into the
register. Reading out of the register can be done while the outputs are enabled in any mode. A direct
overriding clear input is provided to clear the register whether the outputs are enabled or disabled.
Features
• High Speed Operation
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
1 Page Pin Arrangement
HD74HC299
S0 1
Output G1 2
controls G2 3
G/QC 4
E/QE 5
C/QC 6
A/QA 7
QA 8
Clear 9
GND 10
S0 S1
G
SL
G/QG QH
E/QE H/QH
C/QC F/QF
A/QA D/QD
QA B/QB
ClearSR CK
(Top view)
20 VCC
19 S1
18
Shift left
SL
17 QH
16 H/QH
15 F/QF
14 D/QD
13 B/QB
12 Clock
11
Shift right
SR
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage
Output voltage
Output current
DC current drain per VCC, GND
DC input diode current
DC output diode current
Power dissipation per package
Storage temperature
Symbol
VCC
VIN
VOUT
I OUT
ICC, IGND
I IK
I OK
PT
Tstg
Rating
–0.5 to +7.0
–0.5 to VCC + 0.5
–0.5 to VCC + 0.5
±35
±75
±20
±20
500
–65 to +150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
3
3Pages HD74HC299
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Maximum clock
frequency
Symbol
f max
VCC (V)
2.0
4.5
Min Typ Max Min
——5 —
— — 25 —
Max Unit Test Conditions
4 MHz
20
6.0 — — 29 — 23
Propagation delay tPLH
time
t PHL
2.0 — — 190 — 240 ns Clock to QA’ or QH’
4.5 — — 38 — 48
6.0 — — 32 — 41
tPHL 2.0 — — 220 — 275 ns Clear to QA’ or QH’
4.5 — — 44 — 55
6.0 — — 37 — 47
tPLH 2.0 — — 190 — 240 ns Clock to QA – QH
tPHL 4.5 — — 38 — 48
6.0 — — 32 — 41
tPHL 2.0 — — 220 — 275 ns Clear to QA – QH
4.5 — — 44 — 55
6.0 — — 37 — 47
Output enable
time
t ZH
t ZL
2.0 — — 160 — 200 ns
4.5 — — 32 — 40
6.0 — — 27 — 34
Output disable
time
t HZ
t LZ
2.0 — — 160 — 200 ns
4.5 — — 32 — 40
6.0 — — 27 — 34
Setup time
tsu 2.0 100 — — 125 — ns Select
4.5 20 — — 25 —
6.0 17 — — 21 —
Hold time
th 2.0 5 — — 5 — ns Select
4.5 5 — — 5 —
6.0 5 — — 5 —
Removal time
t rem
2.0 50 — — 65 — ns Clear
4.5 10 — — 13 —
6.0 9 — — 11 —
Pulse width tw 2.0 80 — — 100 — ns
4.5 16 — — 20 —
6.0 14 — — 17 —
6
6 Page | |||
ページ | 合計 : 11 ページ | ||
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PDF ダウンロード | [ HD74HC299 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
HD74HC292 | Programmable Frequency Divider/Digital Timer | Hitachi Semiconductor |
HD74HC294 | Programmable Frequency Divider/Digital Timer | Hitachi Semiconductor |
HD74HC298 | Quad. 2-input Multiplexers (with storage) | Hitachi Semiconductor |
HD74HC299 | 8-bit Universal Shift/Storage Register (with 3-state outputs) | Hitachi Semiconductor |