TTL Freq. Divider (f/2, f/4, f/8, f/16)

SKU:

$ 488.75

Features:

  • 100 MHz Toggle Frequency
  • 50 Ω Outputs deliver > 2.2 V into 50 Ω loads
  • TTL/CMOS Compatible Input Levels
  • 50 Ω or 500 Ω Input Resistance
  • BNC I/O Connectors
  • Ready-to-Use 1.3 x 2.9 x 2.9-in. Module includes AC/DC Adapter

Applicatios:

  • Count down signal for 'scope trigger
  • Control Signal for split cycle timing
  • Counter Output simulation Square Wave Generator
  • An Essential Lab Tool for Working with TTL/CMOS Circuits
  • Download Datasheet

Description

The PRL-220A is a self-contained high-speed TTL frequency divider capable of operating at clock frequencies in excess of 100 MHz. The PRL-220A has ÷2, ÷4, ÷8 and ÷16 outputs. The input resistance can be set to 500 Ω or 50 Ω by a toggle switch. A functional block diagram is shown in Fig. 1.

The back-matched 50 Ω outputs can drive long lines and deliver greater than 2.2 V into 50 Ω loads. 

The outputs are square waves, useful for testing High and Low pass filters. The divider outputs are useful as 'scope triggers for viewing multi-frequency signals. The ÷2 signal is often needed as a control signal for split-cycle timing applications.

Each unit is housed in an attractive 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and has BNC I/O connectors. A ±8.5 V AC/DC Adapter is supplied with each unit.

(0° C ≤ TA ≤ 35° C)*

Symbol Parameter Min Typ Max Unit Comments
RIN (Lo) Input Resistance 49.5 50.0 50.5
RIN (Hi) Input Resistance 495 500 505
IDC DC Input Current 200 225 mA
VDC DC Input Voltage 7.5 8.5 12 V
VAC AC/DC Adapter Input Voltage 103 115 127 V
VIH Input Hi Level 2.0 2.5 5.0 V
VIL Input Lo Level -0.5 0.0 0.5 V
VOH Output Hi Level 2.2 2.5 V 50 Ω
4.8 5.0 V 1 M Ω
VOL Output Lo Level 0.15 0.25 V 50 Ω
0.30 0.50 V 1 M Ω
TPLH Propagation Delay to f/n↑ output 10 13 ns
TPHL Propagation Delay to f/n↓ output 10 13 ns
tr Rise Time (10%-90%) 2.0 3.0 ns
tf Fall Time (10%-90%) 1.8 3.0
TSKEW Skew between outputs 1 2 ns
FMAX Max clock frequency 100 MHz
Size 1.3 x 2.9 x 2.9 in.
Shipping weight, incl. AC adapter 4 lb.
*All AC measurements are made with all outputs terminated into 50 Ω