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参数资料
| 型号： | M74HC148TTR |
| 厂商： | 意法半导体 |
| 英文描述： | 8 TO 3 LINE PRIORITY ENCODER |
| 中文描述： | 8:3线优先编码器 |
| 文件页数： | 1/11页 |
| 文件大小： | 252K |
| 代理商： | M74HC148TTR |
M54HC148
M74HC148
October 1992
8 TO 3 LINE PRIORITY ENCODER
B1R
(Plastic Package)
ORDER CODES :
M54HC148F1R
M74HC148B1R
M74HC148M1R
M74HC148C1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTIONS
(top view)
NC =
No Internal
Connection
INPUT AND OUTPUT EQUIVALENT CIRCUIT
DESCRIPTION
The M54/74HC148 is a high speed CMOS 8-TO-3
LINE PRIORITY ENCODER fabricated in silicon
gate C
2
MOS technology.
It hasthe same high speedperformance for LSTTL
combined with true CMOS low power consumption.
The M54/74HC148 encodes eight data lines to
three-line (4-2-1) binary (octal). Cascading circuitry
(enable input EI and enable output EO) has been
provided to allow octal expansion without the need
for external circuitry. Data inputs are active at the
low logic level.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
.
HIGH SPEED
t
PD
= 15 ns(TYP.) AT V
CC
= 5 V
.
LOWPOWER DISSIPATION
I
CC
= 4
μ
A(MAX.) AT T
A
= 25
°
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
I
OH
= I
OL
= 4 mA (MIN.)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS148
1/11
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相关代理商/技术参数 |
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| M74HC14B1 | 制造商:STMicroelectronics 功能描述: |
| M74HC14B1R | 功能描述:变换器 Hex Schmitt Inverter RoHS:否 制造商:NXP Semiconductors 电路数量:6 逻辑系列:74ABT 逻辑类型:BiCMOS 高电平输出电流:- 15 mA 低电平输出电流:20 mA 传播延迟时间:2.2 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 工作温度范围: 封装 / 箱体:DIP-14 封装:Tube |
| M74HC14B1R | 制造商:STMicroelectronics 功能描述:IC HEX INVERTER SCHMITT TRIGGER DIP14 制造商:STMicroelectronics 功能描述:IC, HEX INVERTER, SCHMITT TRIGGER, DIP14 |
| M74HC14C1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HEX SCHMITT INVERTER |
| M74HC14M | 制造商: 功能描述: 制造商:undefined 功能描述: |
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