2 Input TTL Logic Gate, 16 Programmable Functions (AND Gate, OR Gate, XOR Gate)

SKU:

$ 630.00

Applications:

  • Signal Gating, Selection, and Multiplexing
  • Pulse Picking
  • Logic Functions (AND, OR, XOR, etc)
  • Logic High/Low Generation
  • Signal Inversion
  • An Essential Lab Tool for Working with TTL/CMOS Circuits

Features:

  • Manual or Remote Control
  • 100 MHz Input Toggle Frequency
  • 50 Ω Output delivers > 2.2 V into 50 Ω loads
  • 50 Ω or 1 kΩ Input Resistance
  • BNC or SMA I/O Connectors
  • Ready-to-Use 1.3 x 2.9 x 2.9-in. Module includes AC/DC Adapter

Description

The PRL-601T is a 2-input, TTL logic gate with 16 selectable functions, capable of operating at input clock frequencies in excess of 100 MHz. The input resistance of the two TTL inputs can be selected to be 1 kΩ or 50 Ω by a common toggle switch. The back-matched 50 Ω output of this module can drive long lines and deliver greater than 2.2 V into 50 Ω loads.

The TTL Output Z will be a logical function of the two TTL inputs X and Y, as shown in the truth table, below. The logic function can be selected manually or by a remote controller, such as the PRL-USBIO-1. Each unit is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure with BNC or SMA I/O connectors. A ±8.5V AC/DC Adapter, 120/220 VAC manually switchable, is supplied with each unit. A block diagram of the PRL-601T is shown in Fig. 1.

Manual Programming:

Rotate the selector to manually select one of the 16 available logic functions. The corresponding binary code will be displayed on the 4 LEDs, b3-b0. Two selector styles are available—a recessed version that must be rotated with a screwdriver, and a version with a knob that can be rotated with fingers.

Remote Programming:

To program the unit remotely, e.g. from a PRL-USBIO-1, rotate the selector knob to “F”, and then apply TTL-compatible levels to control bits b3-b0. The corresponding binary code will be displayed on the 4 LEDs. The control pins are pulled up to 5 V via 5 K resistors; therefore the remote controller does not need to supply any current.

Ordering information:

To the base model number, PRL-601T, append a selector style:

  • -R for the recessed selector
  • -K for the finger knob

For example PRL-601T-K-BNC has a finger knob and BNC I/Os. A version with SMA I/Os may be offered at a later date.

Mode Select: Output Function Z: X In: 1 0 1 0
Binary Hex Y In: 1 1 0 0
0000 0 0 0 0 0 0
0001 1 X NOR Y 0 0 0 1
0010 2 X AND Y̅ 0 0 1 0
0011 3 0 0 1 1
0100 4 X̅ AND Y 0 1 0 0
0101 5 0 1 0 1
0110 6 X XOR Y 0 1 1 0
0111 7 X NAND Y 0 1 1 1
1000 8 X AND Y 1 0 0 0
1001 9 X XNOR Y 1 0 0 1
1010 A X 1 0 1 0
1011 B X OR 1 0 1 1
1100 C Y 1 1 0 0
1101 D X̅ OR Y 1 1 0 1
1110 E X OR Y 1 1 1 0
1111 F 1 1 1 1 1
PRL-601T Block Diagram and Decal

Sample output waveform is shown below, generated by an Excel-based simulator:

PRL-601T-R-BNC, Output Side

The PRL-601T can be used for many applications, including the following:

  1. Pulse Picking
  2. Clock doubling

The connector spacing of the PRL-601T is designed to facilitate cable-less cascading by connecting the output of one or two units to the inputs of another unit with BNC-M/BNC-M couplers. 

In the following examples three PRL-601T units are cascaded to form a 4-input logic gate: 

(0° C ≤ TA ≤ 35° C)*

SYMBOL PARAMETER Min Typ Max UNIT Comments
RINLo Input Resistance, 50 Ω 49.5 50.0 50.5 Ω  
RINHi Input Resistance, 1 kΩ 990 1000 1010 Ω  
IDC1 DC Input Current   100 125 mA  
VDC DC Input Voltage 7.5 8.5 12.0 V  
VAC1 AC/DC Adapter Input Voltage, 120 VAC 103 115 127 V  
VAC2 AC/DC Adapter Input Voltage, 220 VAC 206 230 254 V  
VIH Input Hi Level 2.0 5.0 V  
VIL Input Lo Level -0.5 0.8 V  
VOH1 Output Hi Level, RLOAD = 50 Ω 2.2 2.5   V  
VOH2 Output Hi Level, RLOAD = 1 MΩ 4.6 5.0   V  
VOL1 Output Lo Level, RLOAD = 50 Ω   0.15 0.25 V  
VOL2 Output Lo Level, RLOAD = 1M Ω   0.3 0.5 V  
TPLH Propagation Delay to f/n output ↑ 4.0 5.0 ns  
TPHL Propagation Delay to f/n output ↓   6.0 7.5 ns  
tr Rise Time (10%-90%)   900 1000 ps  
tf Fall Time (10%-90%)   900 1000 ps  
FMAX Max clock frequency 100     MHz RIN = 50 Ω
  Size 1.3 x 2.9 x 2.9 in.  
  Weight 1 lb.  
  Shipping weight, incl. AC adapter 4 lb.