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参数资料
| 型号： | MM54HC646J |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 总线收发器 |
| 英文描述： | HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDIP24 |
| 封装： | DIP-24 |
| 文件页数： | 1/6页 |
| 文件大小： | 188K |
| 代理商： | MM54HC646J |
TLF5345
MM54HC646MM74HC646
Non-Inverting
Octal
Bus
TransceiverRegisters
MM54HC648MM74HC648
Inverting
Octal
Bus
TransceiverRegisters
January 1988
MM54HC646MM74HC646 Non-Inverting
Octal Bus TransceiverRegisters
MM54HC648MM74HC648
Inverting Octal Bus TransceiverRegisters
General Description
These transceivers utilize advanced silicon-gate CMOS
technology and contain two sets of TRI-STATE
outputs
two sets of D-type flip-flops and control circuitry designed
for high speed multiplexed transmission of data
Six control inputs enable this device to be used as a latched
transceiver unlatched transceiver or a combination of both
As a latched transceiver data from one bus is stored for
later retrieval by the other bus Alternately real time bus
data (unlatched) may be directly transferred from one bus to
another
Circuit operation is determined by the G DIR CAB CBA
SAB SBA control inputs The enable input G controls
whether any bus outputs are enabled The direction control
DIR determines which bus is enabled and hence the direc-
tion data flows The SAB SBA inputs control whether the
latched data (stored in D type flip flops) or the bus data
(from other bus input pins) is transferred Each set of flip-
flops has its own clock CAB and CBA for storing data Data
is latched on the rising edge of the clock
Each output can drive up to 15 low power Schottky TTL
loads These devices are functionally and pin compatible to
their LS-TTL counterparts All inputs are protected from
damage due to static discharge by diodes to VCC and
ground
Features
Y
Typical propagation delay 14 ns
Y
TRI-STATE outputs
Y
Bidirectional communication
Y
Wide power supply range 2 – 6V
Y
Low quiescent supply current 160 mA
maximum (74HC)
Y
High output current 6 mA (74HC)
Connection Diagram
Dual-In-Line Package
TLF5345 – 2
Order Number MM54HC646648 or
MM74HC646648
TLF5345 – 1
Real-Time Transfer
Bus B to Bus A
Real-Time Transfer
Bus A to Bus B
Storage from
A B or A and B
Transfer Stored Data
toAorB
TRI-STATE
is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A
相关PDF资料 |
PDF描述 |
|---|---|
| MM54HC74AJ | HC/UH SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CDIP14 |
| MM74HC74AM | HC/UH SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14 |
| MM54HC74AE | HC/UH SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CQCC20 |
| MM54HC76E | HC/UH SERIES, DUAL NEGATIVE EDGE TRIGGERED J-K FLIP-FLOP, COMPLEMENTARY OUTPUT, CQCC20 |
| MM54HC86J | HC/UH SERIES, QUAD 2-INPUT XOR GATE, CDIP14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MM54HC648 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Non-Inverting Octal Bus Transceiver/Registers |
| MM54HC648 WAF | 制造商:Texas Instruments 功能描述: |
| MM54HC688E/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| MM54HC688J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MM54HC688J/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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