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PDF HD26C32A Data sheet ( Hoja de datos )
| Número de pieza | HD26C32A | |
| Descripción | Quadruple Differential Line Receivers With 3 State Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD26C32A
Quadruple Differential Line Receivers With 3 State Outputs
ADE-205-575 (Z)
1st. Edition
Dec. 2000
Description
The HD26C32A provides differential line receivers which realize low power dissipation by CMOS process.
The device has four receivers which meet the requirements of EIA standard RS-422A and RS-423A in a 16
pin package.
The enable function is common to all four receivers and offers a choise of active high or active low inputs.
Fail safe design ensures that if the inputs are open the outputs will always be high.
Features
• Low power dissipation with CMOS process
• Meets EIA standard RS-422A/423A
• Input sensitivity: ±0.2V (In the range of ±7 V of common mode input voltage)
• Propagation delay time: 19 ns typ
• Input hysteresis width: 60 mV typ
• Three state outputs
• Differential Inputs are includes fail safe circuit
• Power up and power down protection
• Pin to pin compatible with HD26LS32/32A
1 page  
HD26C32A
Switching Characteristics (Ta = –40°C to +85°C, VCC = 5 V ± 10%)
Item
Propagation Delay Time
Output Rise / Fall Time
Output Disable Time
Output Enable Time
Symbol
t PLH
t PHL
t RISE
t FALL
t LZ
t HZ
t ZL
t ZH
Min Typ Max Unit
7 16 25 ns
7 16 25 ns
— 4 9 ns
4 9 ns
— 13 22 ns
13 22 ns
— 13 22 ns
13 22 ns
Conditions
CL = 50 pF, VDIEF = 2.5 V, VCM = 0 V
CL = 50 pF, VDIEF = 2.5 V, VCM = 0 V
CL = 50 pF, RL = 1000 Ω
VDIEF = 2.5 V
CL = 50 pF, RL = 1000 Ω
VDIEF = 2.5 V
5
5 Page 
1. Unidirectional Transmission (1 : 1 Configuration)
Driver B
D
Data Input A
RT
HD26C32A
Receiver
F Data Output
CE
Figure 5 1 : 1 Unidirectional Transmission
A
GND–
B
GND–
C
GND–
Line : 1200 m, Duty : 50%
Frequency : 100 kHz, RT : 100 Ω
H : 5 µs/div
V : 2 V/div
D
GND–
E
GND–
F
GND–
A
GND–
B
GND–
C
GND–
Line : 12 m, Duty : 50%
Frequency : 10 MHz, RT : 100 Ω
H : 50 ns/div
V : 2 V/div
D
GND–
E
GND–
F
GND–
Figure 6 Sample Transmission Waveforms
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet HD26C32A.PDF ] | |
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