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参数资料
| 型号： | SN74ALVC245DGVR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | ALVC/VCX/A SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封装： | GREEN, PLASTIC, TVSOP-20 |
| 文件页数： | 14/18页 |
| 文件大小： | 677K |
| 代理商： | SN74ALVC245DGVR |
www.ti.com
PARAMETER MEASUREMENT INFORMATION
VM
VOH
VOL
th
tsu
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
S1
Open
GND
RL
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at VLOAD
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
tPZL
tPZH
tPLZ
tPHZ
0 V
VOL + V
VOH V
0 V
VI
0 V
tw
VI
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Timing
Input
Data
Input
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
VLOAD
GND
TEST
S1
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR
≤ 10 MHz, ZO = 50 .
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
0 V
VI
VM
tPHL
VM
VI
0 V
VOH
VOL
Input
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VM
tPLH
VLOAD
VLOAD/2
1.8 V
± 0.15 V
2.5 V
± 0.2 V
2.7 V
3.3 V
± 0.3 V
1 k
500
500
500
VCC
RL
2
× VCC
2
× VCC
6 V
VLOAD
CL
30 pF
50 pF
0.15 V
0.3 V
V
VCC
2.7 V
VI
VCC/2
1.5 V
VM
tr/tf
≤2 ns
≤2.5 ns
INPUT
SN74ALVC245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES271D – APRIL 1999 – REVISED JULY 2004
Figure 1. Load Circuit and Voltage Waveforms
5
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| SN74ALVC245DWE4 | 功能描述:总线收发器 Octal Bus Trnscvr With 3-State Outputs RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
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