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参数资料
| 型号： | DS1045S-4+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/6页 |
| 文件大小： | 0K |
| 描述： | IC DELAY LINE 16TAP 16-SOIC |
| 标准包装： | 1,000 |
| 标片/步级数： | 16 |
| 功能： | 多重，可编程 |
| 延迟到第一抽头： | 9ns |
| 接头增量： | 4ns |
| 可用的总延迟： | 69ns |
| 独立延迟数： | 2 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
DS1045
2 of 6
PARALLEL PROGRAMMING
Parallel programming of the DS1045 is accomplished via the set of parallel inputs A0-A3 and B0-B3 as
shown in Figure 1. Parallel input A0-A3 and B0-B3 accept TTL levels and are used to set the delay
values of outputs OUTA and OUTB, respectively. Sixteen possible delay values between the minimum
9ns delay and the maximum delay of the DS1045-x device version can be selected using the parallel
programming inputs A0-A3 or B0-B3 (see Table 2, “Delay vs. Programmed Input”). For example, the
DS1045-3 outputs OUTA or OUTB and can be programmed to produce 16 possible delays between the
9ns (minimum) and the 54ns (maximum) in 3ns increment levels.
For applications that do not require frequent reprogramming, the parallel inputs can be set using fixed
logic levels, as would be produced by jumpers, DIP switches, or TTL levels as produced by computer
systems. Maximum flexibility in parallel programming can be achieved when inputs are set by computer-
generated data. By using the enable input pins for each respective programmed output and observing the
input setup (tDSE) and hold time (tDHE) requirements, data can be latched on an 8-bit bus. If the enable
pins, EA and EB , are not used to latch data, they should be set to a logic level 1. After each change in the
programmed delay value, a settling time (tEDV) or (tPDV) is required before the delayed output signal is
reliably produced. Since the DS1045 is a CMOS design, undefined input pins should be connected to well
defined logic levels and not left floating.
PART NUMBER TABLE Table 1
PART NUMBER
STEP ZERO DELAY
MAX DELAY TIME
MAX DELAY
TOLERANCE
DS1045-3
9
±=1ns
54ns
±2.5ns
DS1045-4
9
±=1ns
69ns
±3.3ns
DS1045-5
9
±=1ns
84ns
±4.1ns
NOTE:
Additional delay step times are available from Dallas Semiconductor by special order. Consult factory for
availability.
BLOCK DIAGRAM Figure 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1045S-5 | 功能描述:延迟线/计时元素 RoHS:否 制造商:Micrel 功能:Active Programmable Delay Line 传播延迟时间:1000 ps 工作温度范围: 封装 / 箱体:QFN-24 封装:Tube |
| DS1046 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TB motor properties |
| DS104C2 | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:Fixed Inductors for Surface Mounting |
| DS104LC | 制造商:TOKO 制造商全称:TOKO, Inc 功能描述:Fixed Inductors for Surface Mounting |
| DS1050 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:5-Bit, Programmable, Pulse-Width Modulator: 1kHz, 5kHz, 10kHz, and 25kHz |
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