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

SKU:

$ 900.45

Item	Description
88000102-4	Cable, triple voltage, with modular plugs, Length in ft.
88000103-4	Cable, triple voltage, with modular plug and pig tail leads, Length in ft.

Product Description
Diagrams
Applications
Specifications
Documents

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 ≤ T_A ≤ 35° C)*

Symbol	Parameter	Min	Typ	Max	Unit
R_IN(Lo)	Input Resistance	49.5	50.0	50.5	Ω
R_IN (Hi)	Input Resistance	495	500	505	Ω
I_DC	DC Input Current		200	225	mA
V_DC	DC Input Voltage	7.5	8.5	12	V
V_AC1	AC/DC Adapter Input Voltage, 120 VAC	103	115	127	V
V_AC2	AC/DC Adapter Input Voltage, 220 VAC	206	230	254	V
V_IH	Input Hi Level	2.0	2.5	5.0	V
V_IL	Input Lo Level	-0.5	0.0	0.5	V
V_OH1	Output Hi Level, R_LOAD = 50 Ω	2.2	2.5		V
V_OH2	Output Hi Level, R_LOAD = 1 MΩ	4.8	5.0		V
V_OL1	Output Lo Level, R_LOAD = 50 Ω		0.15	0.25	V
V_OL2	Output Lo Level, R_LOAD = 1 MΩ		0.30	0.50	V
T_PLH	Propagation Delay to f/n↑ output		10	13	ns
T_PHL	Propagation Delay to f/n↓ output		10	13	ns
t_r	Rise Time (10%-90%)		2.0	3.0	ns
t_f	Fall Time (10%-90%)		1.8	3.0
T_SKEW	Skew between outputs		1	2	ns
F_MAX	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

While we believe these models to be accurate, no representations are made as to accuracy or suitability for any application: