SAB6456T

INTEGRATED CIRCUITS DATA SHEET SAB6456 SAB6456T Sensitive 1 GHz divide-by-64/divide-by-256 switchable prescaler Product specification File under Integrated Circuits, IC02 June 1986 Philips Semiconductors Product specification Sensitive 1 GHz divide-by-64/divide-by-256 switchable prescaler GENERAL DESCRIPTION SAB6456 SAB6456T The SAB6456/SAB6456T is a prescaler for UHF/VHF tuners. It can be switched to divide-by-64 or divide-by-256 by the mode-control (MC) pin. The circuit has an input frequency range of 70 MHz to 1 GHz, has high input sensitivity and good harmonic suppression. Fig.1 Block diagram. QUICK REFERENCE DATA PARAMETER Supply voltage Supply current Input frequency range Sensitivity to input voltage (r.m.s. value) Output voltage (peak-to-peak value) Operating ambient temperature range PACKAGE OUTLINES SAB6456 : 8-lead DIL; plastic (SOT97); SOT97-1; 1996 November 18. SAB6456T: 8-lead mini-pack (SO8; SOT96A); SOT96-1; 1996 November 18. Tamb 0 − 80 °C pins 6 and 7 Vo(p-p) − 1 − V Vi(rms) − − 10 mV CONDITIONS pin 8 to pin 4 pin 8 pins 2 and 3 SYMBOL VCC ICC fi − 70 MIN. 4,5 TYP. 5,0 21 − − 1000 MAX. 5,5 V mA MHz UNIT June 1986 2 Philips Semiconductors Product specification Sensitive 1 GHz divide-by-64/divide-by-256 switchable prescaler PINNING 1. 2. 3. 4. 5. 6. 7. 8. Fig.2 Pinning diagram. n.c. C1 C2 VEE MC QH QL VCC not connected SAB6456 SAB6456T differential inputs ground (0 V) mode control complementary outputs positive supply voltage FUNCTIONAL DESCRIPTI...